From 905ae3df3f5d3bca80577042a8de132ab59cb598 Mon Sep 17 00:00:00 2001 From: dos-reis Date: Wed, 5 Dec 2007 13:38:37 +0000 Subject: * Makefile.pamphlet: Remove rules for extracting files from pamphlets. (%.lo): Adjust include directory. (mostlyclean-local): Don't remove source files and headers. * nagman.c.pamphlet: Remove. * session.c.pamphlet: Likewise. * sman.c.pamphlet: Likewise. * sessions.c: New. * sman.h: Likewise. * sman.c: Likewise. --- src/sman/ChangeLog | 13 + src/sman/Makefile.in | 31 +- src/sman/Makefile.pamphlet | 39 +- src/sman/nagman.c.pamphlet | 636 ------------------------ src/sman/session.c | 511 ++++++++++++++++++++ src/sman/session.c.pamphlet | 601 ----------------------- src/sman/sman.c | 826 +++++++++++++++++++++++++++++++ src/sman/sman.c.pamphlet | 1121 ------------------------------------------- src/sman/sman.h | 54 +++ 9 files changed, 1424 insertions(+), 2408 deletions(-) delete mode 100644 src/sman/nagman.c.pamphlet create mode 100644 src/sman/session.c delete mode 100644 src/sman/session.c.pamphlet create mode 100644 src/sman/sman.c delete mode 100644 src/sman/sman.c.pamphlet create mode 100644 src/sman/sman.h diff --git a/src/sman/ChangeLog b/src/sman/ChangeLog index a5722d5f..98482cdd 100644 --- a/src/sman/ChangeLog +++ b/src/sman/ChangeLog @@ -1,3 +1,16 @@ +2007-12-05 Gabriel Dos Reis + + * Makefile.pamphlet: Remove rules for extracting files from + pamphlets. + (%.lo): Adjust include directory. + (mostlyclean-local): Don't remove source files and headers. + * nagman.c.pamphlet: Remove. + * session.c.pamphlet: Likewise. + * sman.c.pamphlet: Likewise. + * sessions.c: New. + * sman.h: Likewise. + * sman.c: Likewise. + 2007-09-13 Alfredo Portes Waldek Hebisch diff --git a/src/sman/Makefile.in b/src/sman/Makefile.in index ca0b270f..edd36314 100644 --- a/src/sman/Makefile.in +++ b/src/sman/Makefile.in @@ -16,25 +16,22 @@ bin_PROGRAMS = session$(EXEEXT) \ libspad_la = $(axiom_target_libdir)/libspad.la -session_sources = session.c -session_SOURCES = $(addsuffix .pamphlet, $(session_sources)) -session_objects = $(session_sources:.c=.lo) +session_SOURCES = session.c +session_objects = $(session_SOURCES:.c=.lo) session_LDADD = $(libspad_la) @axiom_c_runtime_extra@ session_DEPENDENCIES = -spadclient_sources = spadclient.c -spadclient_objects = $(spadclient_sources:.c=.lo) +spadclient_SOURCES = spadclient.c +spadclient_objects = $(spadclient_SOURCES:.c=.lo) spadclient_LDADD = $(libspad_la) @axiom_c_runtime_extra@ spadclient_DEPENDENCIES = -sman_sources = sman.c -sman_SOURCES = $(addsuffix .pamphlet, $(sman_sources)) -sman_objects = $(sman_sources:.c=.lo) +sman_SOURCES = sman.c +sman_objects = $(sman_SOURCES:.c=.lo) sman_LDADD = $(libspad_la) @axiom_c_runtime_extra@ sman_DEPENDENCIES = -pamphlets = $(session_SOURCES) $(sman_SOURCES) .PHONY: all all-sman @@ -51,14 +48,9 @@ stamp: $(OUTLIB)/session$(EXEEXT) \ .SUFFIXES: .SUFFIXES: .c .h .lo .$(OBJEXT) .PRECIOUS: %.lo %.obj -.PRECIOUS: %.c -.PRECIOUS: %.h %.lo: %.c - $(COMPILE) ${CCF} -o $@ $(axiom_includes) -I$(builddir) $< - -%.c: $(srcdir)/%.c.pamphlet - $(axiom_build_document) --tangle --output=$@ $< + $(COMPILE) ${CCF} -o $@ $(axiom_includes) -I$(srcdir) $< ${OUTLIB}/session$(EXEEXT): $(session_objects) $(session_DEPENDENCIES) $(LINK) -o $@ $(session_objects) $(session_LDADD) ${LDF} @@ -74,13 +66,10 @@ ${OUT}/sman$(EXEEXT): $(sman_objects) $(sman_DEPENDENCIES) $(sman_objects): sman.h $(axiom_c_macros_h) -sman.h: $(srcdir)/sman.c.pamphlet - $(axiom_build_document) --tangle=$@ --output=$@ $< - mostlyclean-local: - @rm -f $(session_sources) $(session_objects) sman.h - @rm -f $(spadclient_sources) $(session_objects) - @rm -f $(sman_sources) $(sman_objects) + @rm -f $(session_objects) sman.h + @rm -f $(session_objects) + @rm -f $(sman_objects) clean-local: mostlyclean-local @rm -f $(OUTLIB)/session$(EXEEXT) diff --git a/src/sman/Makefile.pamphlet b/src/sman/Makefile.pamphlet index db980d94..d7a50858 100644 --- a/src/sman/Makefile.pamphlet +++ b/src/sman/Makefile.pamphlet @@ -34,25 +34,22 @@ bin_PROGRAMS = session$(EXEEXT) \ libspad_la = $(axiom_target_libdir)/libspad.la -session_sources = session.c -session_SOURCES = $(addsuffix .pamphlet, $(session_sources)) -session_objects = $(session_sources:.c=.lo) +session_SOURCES = session.c +session_objects = $(session_SOURCES:.c=.lo) session_LDADD = $(libspad_la) @axiom_c_runtime_extra@ session_DEPENDENCIES = -spadclient_sources = spadclient.c -spadclient_objects = $(spadclient_sources:.c=.lo) +spadclient_SOURCES = spadclient.c +spadclient_objects = $(spadclient_SOURCES:.c=.lo) spadclient_LDADD = $(libspad_la) @axiom_c_runtime_extra@ spadclient_DEPENDENCIES = -sman_sources = sman.c -sman_SOURCES = $(addsuffix .pamphlet, $(sman_sources)) -sman_objects = $(sman_sources:.c=.lo) +sman_SOURCES = sman.c +sman_objects = $(sman_SOURCES:.c=.lo) sman_LDADD = $(libspad_la) @axiom_c_runtime_extra@ sman_DEPENDENCIES = -pamphlets = $(session_SOURCES) $(sman_SOURCES) @ \section{session} @@ -61,14 +58,6 @@ ${OUTLIB}/session$(EXEEXT): $(session_objects) $(session_DEPENDENCIES) $(LINK) -o $@ $(session_objects) $(session_LDADD) ${LDF} @ -\section{nagman} -Note that we do not build the nagman component as we do not have the -necessary code (for instance, [[callnag]]). -<>= -${OUT}/nagman$(EXEEXT): $(nagman_objects) $(nagman_DEPENDENCIES) - $(LINK) -o $@ $(nagman_objects) $(nagman_LDADD) ${LDF} -@ - \section{spadclient} <>= ${OUTLIB}/spadclient$(EXEEXT): $(spadclient_objects) $(spadclient_DEPENDENCIES) @@ -84,9 +73,6 @@ ${OUT}/sman$(EXEEXT): $(sman_objects) $(sman_DEPENDENCIES) $(LINK) -o $@ $(sman_objects) $(sman_LDADD) ${LDF} $(sman_objects): sman.h $(axiom_c_macros_h) - -sman.h: $(srcdir)/sman.c.pamphlet - $(axiom_build_document) --tangle=$@ --output=$@ $< @ <<*>>= @@ -110,14 +96,9 @@ stamp: $(OUTLIB)/session$(EXEEXT) \ .SUFFIXES: .SUFFIXES: .c .h .lo .$(OBJEXT) .PRECIOUS: %.lo %.obj -.PRECIOUS: %.c -.PRECIOUS: %.h %.lo: %.c - $(COMPILE) ${CCF} -o $@ $(axiom_includes) -I$(builddir) $< - -%.c: $(srcdir)/%.c.pamphlet - $(axiom_build_document) --tangle --output=$@ $< + $(COMPILE) ${CCF} -o $@ $(axiom_includes) -I$(srcdir) $< <> @@ -126,9 +107,9 @@ stamp: $(OUTLIB)/session$(EXEEXT) \ <> mostlyclean-local: - @rm -f $(session_sources) $(session_objects) sman.h - @rm -f $(spadclient_sources) $(session_objects) - @rm -f $(sman_sources) $(sman_objects) + @rm -f $(session_objects) + @rm -f $(session_objects) + @rm -f $(sman_objects) clean-local: mostlyclean-local @rm -f $(OUTLIB)/session$(EXEEXT) diff --git a/src/sman/nagman.c.pamphlet b/src/sman/nagman.c.pamphlet deleted file mode 100644 index c8db5f61..00000000 --- a/src/sman/nagman.c.pamphlet +++ /dev/null @@ -1,636 +0,0 @@ -\documentclass{article} -\usepackage{axiom} -\begin{document} -\title{\$SPAD/src/sman nagman.c} -\author{The Axiom Team} -\maketitle -\begin{abstract} -\end{abstract} -\eject -\tableofcontents -\eject -\section{nag.x} -<>= - -/* - * msg.x: Remote message printing protocol - */ -const MAXASP = 10; - -/* - * the nago structure is essentially a variable length string - */ - -struct nago { - opaque z <>; - }; -struct nagerr { -nago p; -nago q; -}; - -struct host{ -nago h <>; -}; - -struct nagst { - -/* Okay, if you understand this bit you know the essentials of how the link - * works. h <> is an array of nago, which is an array of fortran source - * code, the length of the array being the no. of asps (0 for most routines). - * y is the actual (XDR) input data for the routine. nm is the name of the - * routine. id is a tag identifying the host/axiom session. Finally per is a - * number telling whether or not to erase old fortran files on the remote - * machine (persistence - the number per distinct fortran files will be - * stored, any more than this and earlier ones will be deleted. - */ - - nago h <>; - nago y; - nago nm; - nago id; - int per; - }; -program NAGPROG { - version NAGVERS { - nagerr CALLNAG(nagst) = 1; - nago NAGMON(int)=2; - void AXEND(nago)=3; - } = 1; -/* - * the following number is very important. It tells the - * portmapper what number to register the nag daemon under. - * There are rules about which number to pick - check SUN - * technical info for more details - */ -} = 100088; - - -@ -\section{nagman} -\subsection{includes} -<>= -#include "axiom-c-macros.h" -#include "useproto.h" -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include /* always needed */ -#include -#include -#include -#include -#include "nag.h" /* generated by rpcgen */ -#include "com.h" -#include "bsdsignal.h" -#include "sockio-c.H1" -#include "bsdsignal.H1" -#include "nagman.H1" - -@ -\subsection{variables} -<>= -#ifdef ALPHAplatform -extern int getdomainname( char *, int ); -#endif -#ifdef SUN4OS5platform -extern int getdomainname( char *, int ); -extern int gethostname( char *, int ); -#endif - -#ifdef _NO_PROTO -nagerr * callnag_1(); -nago * nagmon_1(); -void * axend_1(); -#else -nagerr * callnag_1(nagst *,CLIENT *); -nago * nagmon_1(int *,CLIENT *); -void * axend_1(nago *,CLIENT *); -#endif - -#define DO 1 -#define DONT 0 - -int hnum, vmax; -char *datafile, *resultsfile; - -struct hostnode { - char * name; - struct hostnode *next; -} *hlist=NULL; - -nagst nag4; -Sock *sock1; - -@ -\subsection{term} -this code runs when the user quits axiom. before nagman dies, it does -an rpc call to nagd to tell it to get rid of files etc. The rpc call in -question is [[axend_1]] -we also send a USR1 to sman to beget another nagman -<>= -static void -#ifdef _NO_PROTO -term(sig) - int sig; -#else -term(int sig) -#endif -{ - CLIENT *cld; - void *res; - struct hostnode *pnode; - -#ifndef HP9platform /* can't figure out a way to do this on HP/UX 9 */ - kill(atoi(getenv("SPADNUM")) , SIGUSR1); -#endif - - - if(hnum!=0) - { - unlink(datafile); - unlink(resultsfile); - } - - for(pnode=hlist;pnode!=NULL;pnode=pnode->next) - { - cld=clnt_create(pnode->name,NAGPROG, NAGVERS, "tcp"); - if (cld == NULL) - goto NOHOST; - - res=axend_1(&(nag4.id),cld); - NOHOST: - clnt_destroy(cld); - } - exit(0); -} - -@ -\subsection{size\_of\_file} -<>= -static long -#ifdef _NO_PROTO -size_of_file(filename) - char *filename; -#else -size_of_file(char *filename) -#endif -{ - struct stat buf_stat; - - stat(filename,&buf_stat); - return (buf_stat.st_size); - -} - -@ -\subsection{rpcloop} -<>= -static void -#ifdef _NO_PROTO -rpcloop() -#else -rpcloop(void) -#endif -{ - CLIENT *cl; - int res,j,v=0,u,showMessage; - long i; - register struct hostent *alias1, *alias2; - struct in_addr *addrnum; - u_long junk; - struct timeval tv; - nagerr *result; - char *Buf , *buf1; - char *ffile[MAXASP]; - char routine[12], naghost[256]; - FILE *nfp1, *nfp2, *nfp3; - struct hostnode *phost; - int fd; - - for (;;) - { - - if((Buf=get_string(sock1))==NULL) term(1); /* one string carries all */ - - if(hnum!=0) - { - /* call parameters */ - free(nag4.nm.z.z_val); /* the routine name */ - free(nag4.y.z.z_val); /* the XDR data */ - for(i=0;ivmax)? v : vmax; - } - - - - - buf1=strtok(Buf," "); - if (buf1) strcpy(naghost,buf1); - else printf("can't parse the naghost\n"); - /* INFO printf("%s\n",naghost);*/ - - buf1=strtok(NULL," "); - if (buf1) strcpy(routine,buf1); - else printf("can't parse the routine\n"); - /* INFO printf("%s\n",routine);*/ - - /* make copy of filenames because we will reuse Buf before deleting the files*/ - buf1=strtok(NULL," "); - if (buf1) resultsfile=strdup(buf1); - else printf("can't parse the resultsfile file\n"); - /* INFO printf("%s\n",resultsfile);*/ - - buf1=strtok(NULL," "); - if (buf1) datafile=strdup(buf1); - else printf("can't parse the datafile file\n"); - /* INFO printf("%s\n",datafile);*/ - - buf1=strtok(NULL," "); - if (buf1) nag4.per=atoi(buf1); - else printf("can't parse the persistence\n"); - /* INFO printf("%d\n",nag4.per);*/ - - buf1=strtok(NULL," "); - if (buf1) { - if (!strcmp(buf1,"on")) showMessage=DO; - else showMessage=DONT; - } - else printf("can't parse the messages flag\n"); - /* INFO printf("%s\n",buf1);*/ - - v=0; /* asp counter */ - while( (buf1=strtok(NULL," ")) ) - { - ffile[v++]=strdup(buf1); - /* INFO printf("%s\n",ffile[v-1]);*/ - } - - /* INFO printf("number of asps seen %d\n",v);*/ - - if(showMessage==DO) printf("nagman:acknowledging request for %s\n",routine); - - res=0; /* prepare result integer to be sent to Lisp */ - - if((nfp3=fopen(resultsfile,"w"))==NULL) - { - printf("can't open output file\n"); - goto END; - } - - /* nag4.h is the XDR array of asp text */ - nag4.h.h_len=v; - nag4.h.h_val=(nago *)malloc((v)*sizeof(nago)); - - - /* get asp text in call argument */ - for(u=0;uh_name); - else - if((alias1=gethostbyname(naghost))!=NULL) - strcpy(naghost,alias1->h_name); - } - else - if((alias1=gethostbyname(naghost))!=NULL) - strcpy(naghost,alias1->h_name); - - - - - cl = clnt_create(naghost, NAGPROG, NAGVERS, "tcp"); - if (cl == NULL) - { - /* - * Couldn't establish connection with server. - * Print error message and die. - */ - clnt_pcreateerror(naghost); - goto END; - } - else - if (showMessage==DO) - printf("nagman:connection successful to %s\n",naghost); - - /* - * this number here sets the "timeout" for the rpc call. after this number - * of seconds, the call will quit if no response is received - * - */ - - tv.tv_sec=1000000; - tv.tv_usec=0; - clnt_control(cl,CLSET_TIMEOUT,(char *)&tv); - - - result = callnag_1(&nag4, cl); - - for(phost=hlist;phost!=NULL;phost=phost->next) - { - /* - * hlist is the "hostlist" of sites that have been contacted by nagman. - * here we check if this call is contacting a new site, and if so add it - * to the hostlist - * - */ - - if(!strcmp(phost->name,naghost)) - goto SKIP; - } - - if(hnum==0) { - hlist=(struct hostnode *)malloc(sizeof(struct hostnode)); - hlist->name=strdup(naghost); - hlist->next=NULL; - } - - else { - phost=(struct hostnode *)malloc(sizeof(struct hostnode)); - phost->name=strdup(naghost); - phost->next=hlist; - hlist=phost; - } - hnum++; - - - SKIP: - if (result == NULL) - { - /* - * An error occurred while calling the server. - * Print error message and die. - */ - if (showMessage==DO) - printf("nagman:no results (error) from %s\n",naghost); - clnt_perror(cl,naghost); - clnt_destroy(cl); - goto END; - } - - /* - * (*result).p is the part of the result with the XDRed results in it - * (numbers). (*result).q is the part with (text) error messages that - * have come from the NAG library. If there is neither an XDR result, - * nor a text error message from the library, then something is wrong - * so we just print out the "no result or error returned" message. - * - */ - - else if ((*result).p.z.z_len==0) - { - if((*result).q.z.z_len==0) - { - if (showMessage==DO) - printf("nagman:empty result (error) from %s\n",naghost); - clnt_destroy(cl); - goto END; - } - else - { - if (showMessage==DO) - printf("nagman:receiving results from %s\n\n",naghost); - for(j=0;j<(*result).q.z.z_len;j++) - printf("%c",(*result).q.z.z_val[j]); - clnt_destroy(cl); - goto END; - } - } - else - if (showMessage==DO) - printf("nagman:receiving results from %s\n\n",naghost); - - if (showMessage==DO) - fwrite(result->q.z.z_val,sizeof(char),result->q.z.z_len,stdout); - - /*INFO printf("\nRESULTS of length %d\n",(*result).p.z.z_len);*/ - - fwrite(result->p.z.z_val,sizeof(char),result->p.z.z_len, nfp3); - res=1; - clnt_destroy(cl); - - /* - * in case of any type of error, a goto END in the above code causes - * nagman to skip here and return to AXIOM - * - */ - - - END: - fclose(nfp3); - /* - * if everything has gone alright, send_int returns the integer res=1. If - * not it returns res=0. This is detected by the boot code which acts - * accordingly. - */ - send_int(sock1,res); - free(Buf); - } - - -} - -@ -\subsection{catchSignals} -catchSignals sets up signal handling. If nagman gets a sigterm it does not -die but goes back to rpcloop -<>= -static void -#ifdef _NO_PROTO -catchSignals() -#else -catchSignals(void) -#endif -{ - bsdSignal(SIGTERM,term,RestartSystemCalls); - bsdSignal(SIGSEGV,term,RestartSystemCalls); -} - -@ -\subsection{main} -<
>= -void -#ifdef _NO_PROTO -main(argc,argv) -int argc; -char **argv; -#else -main(int argc,char **argv) -#endif -{ - char this[256],*hname,*dname,*spadnum; - int stat; - - catchSignals(); - stat=gethostname(this,256); - if (stat!=0) perror("gethostname"); - hname=strdup(this); - - stat=getdomainname(this,256); - if (stat!=0) perror("getdomainname"); - dname=strdup(this); - spadnum=getenv("SPADNUM"); - if (spadnum==0) { - fprintf(stderr,"nagman error: SPADNUM is not in the environment\n"); - exit(0); - } - - /* some machines return a full name from hostname - need to check hname has a . in it */ - - if (strchr(hname,'.')) - /* '.' found */ - sprintf(this,"%s_%i",hname,atoi(spadnum)); - else - /* substring not found */ - sprintf(this,"%s.%s_%i",hname,dname,atoi(spadnum)); - - /* this must contain the Internet address of the current host */ - nag4.id.z.z_val=strdup(this); - nag4.id.z.z_len=strlen(nag4.id.z.z_val); - hnum=0; - vmax=0; - /* - * this line sets up a socket for communication with the lisp - */ - - sock1 = connect_to_local_server(SpadServer, DebugWindow, 120 /*seconds*/); - if (!sock1) exit(0); - - rpcloop(); -} - -@ -\subsection{nagman} -<>= -#define _NAGMAN_C -<> -<> -<> -<> -<> -<> -<
> -@ -\section{License} -<>= -/* -Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd. -All rights reserved. - -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions are -met: - - - Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - - - Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in - the documentation and/or other materials provided with the - distribution. - - - Neither the name of The Numerical ALgorithms Group Ltd. nor the - names of its contributors may be used to endorse or promote products - derived from this software without specific prior written permission. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS -IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED -TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A -PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER -OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, -EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, -PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR -PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF -LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING -NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS -SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -*/ - -@ -<<*>>= -<> -<> -@ -\eject -\begin{thebibliography}{99} -\bibitem{1} nothing -\end{thebibliography} -\end{document} diff --git a/src/sman/session.c b/src/sman/session.c new file mode 100644 index 00000000..1294fe1a --- /dev/null +++ b/src/sman/session.c @@ -0,0 +1,511 @@ +/* + Copyright (c) 1991-2002, The Numerical Algorithms Group Ltd. + All rights reserved. + + Copyright (C) 2007, Gabriel Dos Reis. + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are + met: + + - Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + + - Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in + the documentation and/or other materials provided with the + distribution. + + - Neither the name of The Numerical ALgorithms Group Ltd. nor the + names of its contributors may be used to endorse or promote products + derived from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS + IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER + OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +/* #define DEBUG */ +#define _SESSION_C + +#include "axiom-c-macros.h" +#include +#include +#include +#include +#include +#ifdef SGIplatform +#include +#endif +#include "com.h" +#include "bsdsignal.h" +#include "sockio-c.H1" +#include "bsdsignal.H1" +#include "session.H1" + +#define BufSize 4096 /* size of communication buffer */ + +typedef struct sock_list { /* linked list of Sock */ + Sock Socket; + struct sock_list *next; +} Sock_List; + +Sock *spad_io = (Sock *) 0; /* to_server socket for SessionIO */ +Sock *spad_server = (Sock *) 0; /* to_server socket for SpadServer */ +Sock *menu_client = (Sock *) 0; /* to_client socket for MenuServerName */ +Sock *active_session = (Sock *) 0; /* pointer to currently active session */ + +Sock_List *plSock = (Sock_List *) 0; + +char big_bad_buf[BufSize]; /* big I/O buffer */ +int num_active_clients = 0; /* number of InterpWindows attached */ +int reading_output = 0; +fd_set session_socket_mask; + +static void +usr1_handler(int sig) +{ + return; +} + +static void +usr2_handler(int sig) +{ + send_signal(spad_server, SIGINT); + return; +} + +static void +term_handler(int sig) +{ + exit(1); +} + +static void +pr() +{ + Sock_List *pSock; + + fprintf(stderr,"The socket list:\n"); + for(pSock=plSock;pSock!=(Sock_List *)0;pSock=pSock->next){ + fprintf(stderr,"(%d,%d,%d)\t",pSock->Socket.pid,2<<(pSock->Socket.socket),pSock->Socket.frame); + } + fprintf(stderr,"\n"); +} + +static void +close_client(int frame) +{ + Sock_List *pSock,*locSock; + int socket_fd; + + /* we will check for frame equality, + kill with send_signal, + notify HyperTex so that it updates its list (if it's a spadbuf), + repair the list, + unset the active_session, + update num_active_clients + */ + + + /* first check head */ +#ifdef DEBUG +fprintf(stderr,"close_client(%d)\n",frame); +#endif + + if ( (plSock) && (plSock->Socket.frame == frame) ){ + socket_fd = plSock->Socket.socket; + send_signal((Sock *)plSock, SIGTERM); + if ( menu_client != (Sock *) 0){ + send_int(menu_client,CloseClient); + send_int(menu_client,(*plSock).Socket.pid); + } +#ifdef DEBUG +fprintf(stderr,"trying to clear %u\n",socket_fd); +#endif + FD_CLR(socket_fd,&session_socket_mask); + locSock = plSock; + if ((*plSock).next == (Sock_List *) 0) + {plSock = (Sock_List *) 0;} + else + {plSock = plSock->next;} + active_session = (Sock *) 0; + num_active_clients--; + free(locSock); + } + + /* now check the rest */ + + else { + for (pSock=plSock; pSock->next != (Sock_List *) 0 ; pSock=pSock->next) + if (pSock->next->Socket.frame == frame){ + socket_fd = pSock->next->Socket.socket; + send_signal((Sock *)pSock->next, SIGTERM); + if ( menu_client != (Sock *) 0){ + send_int(menu_client,CloseClient); + send_int(menu_client,(*plSock).Socket.pid); + } +#ifdef DEBUG +fprintf(stderr,"trying to clear %u\n",socket_fd); +#endif + FD_CLR(socket_fd,&session_socket_mask); + locSock = pSock->next; + if ( pSock->next->next == (Sock_List *) 0 ) + { pSock->next= (Sock_List *) 0;} + else + { pSock->next = pSock->next->next;} + num_active_clients--; + active_session = (Sock *) 0; + free(locSock); + break; + } + } +#ifdef DEBUG +pr(); +#endif +} + +static void +read_SpadServer_command(void) +{ + int cmd, frame, num; + cmd = get_int(spad_server); + switch (cmd) { + case EndOfOutput: + if (menu_client != (Sock *) 0) send_signal(menu_client, SIGUSR2); + if (reading_output != 0) reading_output = 0; + break; + case QueryClients: + /* don't count MenuServer */ + num = num_active_clients ; + send_int(spad_server, num); + break; + case CloseClient: + frame = get_int(spad_server); + if (frame != -1) close_client(frame); + break; + case SendXEventToHyperTeX: + break; + default: + fprintf(stderr, "session : unknown command from SpadServer %d\n", cmd); + break; + } +} + +static int +test_sock_for_process(Sock *sock) +{ + if (sock == (Sock *)0 ) return -1; + return kill(sock->pid, 0); +} + +static void +read_menu_client_command(void) +{ + int cmd,frame, i,socket_fd; + Sock_List *pSock; + + /* save it for possible clearing */ + socket_fd = menu_client->socket; + + if (test_sock_for_process(menu_client) == -1) { + FD_CLR(socket_fd,&session_socket_mask); + menu_client = (Sock *) 0; + reading_output = 0; + return; + } + cmd = get_int(menu_client); + switch(cmd) { + case -1: /* socket closed */ + FD_CLR(socket_fd,&session_socket_mask); + menu_client = (Sock *) 0; + reading_output = 0; + break; + case SwitchFrames: +#ifdef DEBUG +fprintf(stderr,"menu:SwitchFrames\n"); +#endif + frame = get_int(menu_client); + send_int(spad_server, SwitchFrames); + send_int(spad_server, frame); + for(i=0,pSock=plSock; pSock != (Sock_List *) 0 ; i++,pSock=pSock->next) + if ((pSock->Socket.frame == frame)) { + active_session = (Sock *)pSock; + reading_output = 1; + break; + } + if (i == num_active_clients) { + /* fprintf(stderr, "Couldn't find socket for frame %d\n", frame); */ + } + break; + case QuerySpad: +#ifdef DEBUG +fprintf(stderr,"menu:QuerySpad\n"); +#endif + send_int(menu_client, reading_output); + break; + default: + fprintf(stderr, "session : unknown command from MenuServer: %d\n", cmd); + menu_client = (Sock *) 0; + break; + } +} + +static void +read_from_spad_io(void) +{ + int ret_code; + ret_code = sread(spad_io, big_bad_buf, BufSize, "session: stdout socket"); + if (ret_code == -1) return; + if(active_session != (Sock *) 0) { + ret_code = swrite(active_session, big_bad_buf, ret_code, + NULL); + } +} + +static void +kill_spad(void) +{ + int i; + Sock_List *pSock; + + send_signal(spad_server, SIGTERM); + for (pSock=plSock,i=0; + (inext) { + if ((pSock->Socket).socket != 0) + send_signal((Sock *)pSock, SIGTERM); + } + if (menu_client != (Sock *) 0) send_signal(menu_client, SIGTERM); + exit(0); +} + +static int +accept_session_connection(Sock *server_sock) +{ + int sock_fd, ret_code; + Sock_List *pls; + + /* Could be three things : KillSpad MenuServer InterpWindow */ + + pls = (Sock_List *) malloc(sizeof (Sock_List)); + sock_fd = accept(server_sock->socket, 0, 0); + if (sock_fd == -1) { + perror("session : accepting connection"); + return -1; + } + (pls->Socket).socket = sock_fd; + get_socket_type((Sock *)pls); + + switch((pls->Socket).purpose) { + case KillSpad: + kill_spad(); + return KillSpad; + free(pls); + case MenuServer: +#ifdef DEBUG + fprintf(stderr,"session: accepted MenuServer , fd = %d\n",sock_fd); +#endif + menu_client = &(pls->Socket); + FD_SET(menu_client->socket, &session_socket_mask); + return MenuServer; + case InterpWindow: +#ifdef DEBUG + fprintf(stderr,"session: accepted InterpWindow , fd = %d\n",sock_fd); +#endif + + /* new Sock is put at the head of the list */ + if (plSock == (Sock_List *)0 ) { + plSock = pls; + plSock->next = (Sock_List *)0 ; + } + else{ + pls->next = plSock; + plSock = pls; + } + + /* we need to maintain session_socket_mask here since we roll our own accept */ + + FD_SET(plSock->Socket.socket, &session_socket_mask); + send_int(spad_server, CreateFrame); + plSock->Socket.frame = get_int(spad_server); + active_session = (Sock *)plSock; + get_string_buf(spad_server, big_bad_buf, BufSize); + ret_code = swrite((Sock *)plSock, big_bad_buf, strlen(big_bad_buf)+1, + "session: writing to InterpWindow"); + if (ret_code == -1) + return -1; + num_active_clients++; +#ifdef DEBUG +pr(); +#endif + return plSock->Socket.purpose; + } + return (-1); +} + +static void +read_from_session(Sock *sock) +{ + int ret_code; + if (sock != active_session) { + send_int(spad_server, SwitchFrames); + send_int(spad_server, sock->frame); + } + active_session = sock; + ret_code = sread(sock, big_bad_buf, BufSize, + "session: reading InterpWindow"); + if (ret_code == -1) { + active_session = (Sock *) 0; + reading_output = 0; + return; + } + ret_code = swrite(spad_io, big_bad_buf, ret_code, + "session: writing SessionIO"); + if (ret_code == -1) { + active_session = (Sock *)0 ; + reading_output = 0; + return; + } + reading_output = 1; +} + +static void +manage_sessions(void) +{ + int ret_code; + fd_set rd, wr, ex; + Sock_List *pSock; + + reading_output = 0; + while (1) { + FD_ZERO(&rd); + FD_ZERO(&wr); + FD_ZERO(&ex); + + /* Allow server socket and all connections if not waiting for output + socket_mask is maintained by libspad.a */ +#ifdef DEBUG +fprintf(stderr,"session_socket_mask=%u ",*((long *)session_socket_mask.fds_bits)); +#endif + rd = session_socket_mask; + if (!reading_output) { + rd = session_socket_mask; + } + + /* Allow the active_session if set */ + if (active_session) FD_SET(active_session->socket, &rd); +#ifdef DEBUG +fprintf(stderr,"[rd=%u ",*((long *)rd.fds_bits)); +#endif + + ret_code = sselect(FD_SETSIZE, &rd, &wr, &ex, NULL); + if (ret_code == -1) { + break; + } +#ifdef DEBUG +fprintf(stderr,"rd=%u]\n",*((long *)rd.fds_bits)); +#endif + + if ((menu_client != (Sock *) 0) && FD_ISSET(menu_client->socket, &rd)) { + /* MenuServer wants to talk */ + read_menu_client_command(); } + + + if (FD_ISSET(spad_io->socket, &rd)) { + /* Lisp has output */ + read_from_spad_io(); } + + + if (FD_ISSET(server[1].socket, &rd)) { + /* Someone wants to connect to our server socket */ + accept_session_connection(server+1); } + + + for(pSock=plSock; pSock != (Sock_List *) 0 ; pSock=pSock->next) { + if ((active_session == (Sock *)pSock || !reading_output) && + (pSock->Socket).socket>0 && FD_ISSET(pSock->Socket.socket, &rd)) { + /* An InterpWindow */ + read_from_session((Sock *)pSock); } + } + + + if (FD_ISSET(spad_server->socket, &rd)) { + /* The Lisp socket */ + read_SpadServer_command(); } + } +} + +int +main(void) +{ + +#ifdef DEBUG2 + /* delay for attaching with debugger before interesting things happen */ + sleep(30); +#endif + + /* spad_server connects to Lisp server socket + read_SpadServer_command handles requests */ + spad_server = connect_to_local_server(SpadServer, SessionManager, Forever); + if (spad_server == (Sock *) 0) { + fprintf(stderr, "session: Cannot connect to AXIOM server!\n"); + exit(0); + } + else { +#ifdef DEBUG + fprintf(stderr, "session: connected SpadServer , fd = %d\n", + spad_server->socket); +#endif + FD_SET(spad_server->socket, &session_socket_mask); + } + + + /* spad_io connects to SessionIOName server socket + this is Lisp std IO read_from_spad_io handles requests */ + spad_io = connect_to_local_server(SessionIOName, SessionIO, Forever); + if (spad_io == (Sock *) 0) { + fprintf(stderr, "session: Cannot connect to AXIOM IO!\n"); + exit(0); + } + else { +#ifdef DEBUG + fprintf(stderr,"session: connected SessionIOName , fd = %d\n", + spad_io->socket); +#endif + FD_SET(spad_io->socket, &session_socket_mask); + } + bsdSignal(SIGUSR2, usr2_handler,DontRestartSystemCalls); + bsdSignal(SIGUSR1, usr1_handler,RestartSystemCalls); + bsdSignal(SIGINT, SIG_IGN,RestartSystemCalls); + bsdSignal(SIGTERM, term_handler,RestartSystemCalls); + + /* open_server opens the server socket so that we can accept connections + we expect connections from spadbuf/spadclient(purpose:InterpWindow) + and hypertex (MenuServer) */ + + if (open_server(SessionServer) == -2) { + fprintf(stderr, "session: Cannot make server socket!\n"); + exit(-1); + } + else { +#ifdef DEBUG + fprintf(stderr, "session: opened SessionServer , fd = %d\n", + server[1].socket); +#endif + FD_SET(server[1].socket,&session_socket_mask); + } + manage_sessions(); + return(0); +} + + diff --git a/src/sman/session.c.pamphlet b/src/sman/session.c.pamphlet deleted file mode 100644 index 8b6f3e92..00000000 --- a/src/sman/session.c.pamphlet +++ /dev/null @@ -1,601 +0,0 @@ -\documentclass{article} -\usepackage{axiom} -\begin{document} -\title{\$SPAD/src/sman session.c} -\author{The Axiom Team} -\maketitle -\begin{abstract} -\end{abstract} -\eject -\tableofcontents -\eject -\section{session} -\subsection{includes} -<>= -#include "axiom-c-macros.h" -#include -#include -#include -#include -#include -#ifdef SGIplatform -#include -#endif -#include "com.h" -#include "bsdsignal.h" -#include "sockio-c.H1" -#include "bsdsignal.H1" -#include "session.H1" - -@ -\subsection{variables} -<>= -#define BufSize 4096 /* size of communication buffer */ - -typedef struct sock_list { /* linked list of Sock */ - Sock Socket; - struct sock_list *next; -} Sock_List; - -Sock *spad_io = (Sock *) 0; /* to_server socket for SessionIO */ -Sock *spad_server = (Sock *) 0; /* to_server socket for SpadServer */ -Sock *menu_client = (Sock *) 0; /* to_client socket for MenuServerName */ -Sock *active_session = (Sock *) 0; /* pointer to currently active session */ - -Sock_List *plSock = (Sock_List *) 0; - -char big_bad_buf[BufSize]; /* big I/O buffer */ -int num_active_clients = 0; /* number of InterpWindows attached */ -int reading_output = 0; -fd_set session_socket_mask; - -@ -\subsection{usr1\_handler} -<>= -static void -usr1_handler(int sig) -{ - return; -} - -@ -\subsection{usr2\_handler} -SIGUSR2 is generated by spadclients. -We interpret it as an interrupt for the Lisp. -<>= -static void -usr2_handler(int sig) -{ - send_signal(spad_server, SIGINT); - return; -} - -@ -\subsection{term\_handler} -<>= -static void -term_handler(int sig) -{ - exit(1); -} - -@ -\subsection{pr} -<>= -static void -pr() -{ - Sock_List *pSock; - - fprintf(stderr,"The socket list:\n"); - for(pSock=plSock;pSock!=(Sock_List *)0;pSock=pSock->next){ - fprintf(stderr,"(%d,%d,%d)\t",pSock->Socket.pid,2<<(pSock->Socket.socket),pSock->Socket.frame); - } - fprintf(stderr,"\n"); -} - -@ -\subsection{close\_client} -<>= -static void -close_client(int frame) -{ - Sock_List *pSock,*locSock; - int socket_fd; - - /* we will check for frame equality, - kill with send_signal, - notify HyperTex so that it updates its list (if it's a spadbuf), - repair the list, - unset the active_session, - update num_active_clients - */ - - - /* first check head */ -#ifdef DEBUG -fprintf(stderr,"close_client(%d)\n",frame); -#endif - - if ( (plSock) && (plSock->Socket.frame == frame) ){ - socket_fd = plSock->Socket.socket; - send_signal((Sock *)plSock, SIGTERM); - if ( menu_client != (Sock *) 0){ - send_int(menu_client,CloseClient); - send_int(menu_client,(*plSock).Socket.pid); - } -#ifdef DEBUG -fprintf(stderr,"trying to clear %u\n",socket_fd); -#endif - FD_CLR(socket_fd,&session_socket_mask); - locSock = plSock; - if ((*plSock).next == (Sock_List *) 0) - {plSock = (Sock_List *) 0;} - else - {plSock = plSock->next;} - active_session = (Sock *) 0; - num_active_clients--; - free(locSock); - } - - /* now check the rest */ - - else { - for (pSock=plSock; pSock->next != (Sock_List *) 0 ; pSock=pSock->next) - if (pSock->next->Socket.frame == frame){ - socket_fd = pSock->next->Socket.socket; - send_signal((Sock *)pSock->next, SIGTERM); - if ( menu_client != (Sock *) 0){ - send_int(menu_client,CloseClient); - send_int(menu_client,(*plSock).Socket.pid); - } -#ifdef DEBUG -fprintf(stderr,"trying to clear %u\n",socket_fd); -#endif - FD_CLR(socket_fd,&session_socket_mask); - locSock = pSock->next; - if ( pSock->next->next == (Sock_List *) 0 ) - { pSock->next= (Sock_List *) 0;} - else - { pSock->next = pSock->next->next;} - num_active_clients--; - active_session = (Sock *) 0; - free(locSock); - break; - } - } -#ifdef DEBUG -pr(); -#endif -} - -@ -\subsection{read\_SpadServer\_command} -<>= -static void -read_SpadServer_command(void) -{ - int cmd, frame, num; - cmd = get_int(spad_server); - switch (cmd) { - case EndOfOutput: - if (menu_client != (Sock *) 0) send_signal(menu_client, SIGUSR2); - if (reading_output != 0) reading_output = 0; - break; - case QueryClients: - /* don't count MenuServer */ - num = num_active_clients ; - send_int(spad_server, num); - break; - case CloseClient: - frame = get_int(spad_server); - if (frame != -1) close_client(frame); - break; - case SendXEventToHyperTeX: - break; - default: - fprintf(stderr, "session : unknown command from SpadServer %d\n", cmd); - break; - } -} - -@ -\subsection{test\_sock\_for\_process} -<>= -static int -test_sock_for_process(Sock *sock) -{ - if (sock == (Sock *)0 ) return -1; - return kill(sock->pid, 0); -} - -@ -\subsection{read\_menu\_client\_command} -<>= -static void -read_menu_client_command(void) -{ - int cmd,frame, i,socket_fd; - Sock_List *pSock; - - /* save it for possible clearing */ - socket_fd = menu_client->socket; - - if (test_sock_for_process(menu_client) == -1) { - FD_CLR(socket_fd,&session_socket_mask); - menu_client = (Sock *) 0; - reading_output = 0; - return; - } - cmd = get_int(menu_client); - switch(cmd) { - case -1: /* socket closed */ - FD_CLR(socket_fd,&session_socket_mask); - menu_client = (Sock *) 0; - reading_output = 0; - break; - case SwitchFrames: -#ifdef DEBUG -fprintf(stderr,"menu:SwitchFrames\n"); -#endif - frame = get_int(menu_client); - send_int(spad_server, SwitchFrames); - send_int(spad_server, frame); - for(i=0,pSock=plSock; pSock != (Sock_List *) 0 ; i++,pSock=pSock->next) - if ((pSock->Socket.frame == frame)) { - active_session = (Sock *)pSock; - reading_output = 1; - break; - } - if (i == num_active_clients) { - /* fprintf(stderr, "Couldn't find socket for frame %d\n", frame); */ - } - break; - case QuerySpad: -#ifdef DEBUG -fprintf(stderr,"menu:QuerySpad\n"); -#endif - send_int(menu_client, reading_output); - break; - default: - fprintf(stderr, "session : unknown command from MenuServer: %d\n", cmd); - menu_client = (Sock *) 0; - break; - } -} - -@ -\subsection{read\_from\_spad\_io} -<>= -static void -read_from_spad_io(void) -{ - int ret_code; - ret_code = sread(spad_io, big_bad_buf, BufSize, "session: stdout socket"); - if (ret_code == -1) return; - if(active_session != (Sock *) 0) { - ret_code = swrite(active_session, big_bad_buf, ret_code, - NULL); - } -} - -@ -\subsection{kill\_spad} -<>= -static void -kill_spad(void) -{ - int i; - Sock_List *pSock; - - send_signal(spad_server, SIGTERM); - for (pSock=plSock,i=0; - (inext) { - if ((pSock->Socket).socket != 0) - send_signal((Sock *)pSock, SIGTERM); - } - if (menu_client != (Sock *) 0) send_signal(menu_client, SIGTERM); - exit(0); -} - -@ -\subsection{accept\_session\_connection} -<>= -static int -accept_session_connection(Sock *server_sock) -{ - int sock_fd, ret_code; - Sock_List *pls; - - /* Could be three things : KillSpad MenuServer InterpWindow */ - - pls = (Sock_List *) malloc(sizeof (Sock_List)); - sock_fd = accept(server_sock->socket, 0, 0); - if (sock_fd == -1) { - perror("session : accepting connection"); - return -1; - } - (pls->Socket).socket = sock_fd; - get_socket_type((Sock *)pls); - - switch((pls->Socket).purpose) { - case KillSpad: - kill_spad(); - return KillSpad; - free(pls); - case MenuServer: -#ifdef DEBUG - fprintf(stderr,"session: accepted MenuServer , fd = %d\n",sock_fd); -#endif - menu_client = &(pls->Socket); - FD_SET(menu_client->socket, &session_socket_mask); - return MenuServer; - case InterpWindow: -#ifdef DEBUG - fprintf(stderr,"session: accepted InterpWindow , fd = %d\n",sock_fd); -#endif - - /* new Sock is put at the head of the list */ - if (plSock == (Sock_List *)0 ) { - plSock = pls; - plSock->next = (Sock_List *)0 ; - } - else{ - pls->next = plSock; - plSock = pls; - } - - /* we need to maintain session_socket_mask here since we roll our own accept */ - - FD_SET(plSock->Socket.socket, &session_socket_mask); - send_int(spad_server, CreateFrame); - plSock->Socket.frame = get_int(spad_server); - active_session = (Sock *)plSock; - get_string_buf(spad_server, big_bad_buf, BufSize); - ret_code = swrite((Sock *)plSock, big_bad_buf, strlen(big_bad_buf)+1, - "session: writing to InterpWindow"); - if (ret_code == -1) - return -1; - num_active_clients++; -#ifdef DEBUG -pr(); -#endif - return plSock->Socket.purpose; - } - return (-1); -} - -@ -\subsection{read\_from\_session} -<>= -static void -read_from_session(Sock *sock) -{ - int ret_code; - if (sock != active_session) { - send_int(spad_server, SwitchFrames); - send_int(spad_server, sock->frame); - } - active_session = sock; - ret_code = sread(sock, big_bad_buf, BufSize, - "session: reading InterpWindow"); - if (ret_code == -1) { - active_session = (Sock *) 0; - reading_output = 0; - return; - } - ret_code = swrite(spad_io, big_bad_buf, ret_code, - "session: writing SessionIO"); - if (ret_code == -1) { - active_session = (Sock *)0 ; - reading_output = 0; - return; - } - reading_output = 1; -} - -@ -\subsection{manage\_sessions} -<>= -static void -manage_sessions(void) -{ - int ret_code; - fd_set rd, wr, ex; - Sock_List *pSock; - - reading_output = 0; - while (1) { - FD_ZERO(&rd); - FD_ZERO(&wr); - FD_ZERO(&ex); - - /* Allow server socket and all connections if not waiting for output - socket_mask is maintained by libspad.a */ -#ifdef DEBUG -fprintf(stderr,"session_socket_mask=%u ",*((long *)session_socket_mask.fds_bits)); -#endif - rd = session_socket_mask; - if (!reading_output) { - rd = session_socket_mask; - } - - /* Allow the active_session if set */ - if (active_session) FD_SET(active_session->socket, &rd); -#ifdef DEBUG -fprintf(stderr,"[rd=%u ",*((long *)rd.fds_bits)); -#endif - - ret_code = sselect(FD_SETSIZE, &rd, &wr, &ex, NULL); - if (ret_code == -1) { - break; - } -#ifdef DEBUG -fprintf(stderr,"rd=%u]\n",*((long *)rd.fds_bits)); -#endif - - if ((menu_client != (Sock *) 0) && FD_ISSET(menu_client->socket, &rd)) { - /* MenuServer wants to talk */ - read_menu_client_command(); } - - - if (FD_ISSET(spad_io->socket, &rd)) { - /* Lisp has output */ - read_from_spad_io(); } - - - if (FD_ISSET(server[1].socket, &rd)) { - /* Someone wants to connect to our server socket */ - accept_session_connection(server+1); } - - - for(pSock=plSock; pSock != (Sock_List *) 0 ; pSock=pSock->next) { - if ((active_session == (Sock *)pSock || !reading_output) && - (pSock->Socket).socket>0 && FD_ISSET(pSock->Socket.socket, &rd)) { - /* An InterpWindow */ - read_from_session((Sock *)pSock); } - } - - - if (FD_ISSET(spad_server->socket, &rd)) { - /* The Lisp socket */ - read_SpadServer_command(); } - } -} - -@ -\subsection{main} -<
>= -int -main(void) -{ - -#ifdef DEBUG2 - /* delay for attaching with debugger before interesting things happen */ - sleep(30); -#endif - - /* spad_server connects to Lisp server socket - read_SpadServer_command handles requests */ - spad_server = connect_to_local_server(SpadServer, SessionManager, Forever); - if (spad_server == (Sock *) 0) { - fprintf(stderr, "session: Cannot connect to AXIOM server!\n"); - exit(0); - } - else { -#ifdef DEBUG - fprintf(stderr, "session: connected SpadServer , fd = %d\n", - spad_server->socket); -#endif - FD_SET(spad_server->socket, &session_socket_mask); - } - - - /* spad_io connects to SessionIOName server socket - this is Lisp std IO read_from_spad_io handles requests */ - spad_io = connect_to_local_server(SessionIOName, SessionIO, Forever); - if (spad_io == (Sock *) 0) { - fprintf(stderr, "session: Cannot connect to AXIOM IO!\n"); - exit(0); - } - else { -#ifdef DEBUG - fprintf(stderr,"session: connected SessionIOName , fd = %d\n", - spad_io->socket); -#endif - FD_SET(spad_io->socket, &session_socket_mask); - } - bsdSignal(SIGUSR2, usr2_handler,DontRestartSystemCalls); - bsdSignal(SIGUSR1, usr1_handler,RestartSystemCalls); - bsdSignal(SIGINT, SIG_IGN,RestartSystemCalls); - bsdSignal(SIGTERM, term_handler,RestartSystemCalls); - - /* open_server opens the server socket so that we can accept connections - we expect connections from spadbuf/spadclient(purpose:InterpWindow) - and hypertex (MenuServer) */ - - if (open_server(SessionServer) == -2) { - fprintf(stderr, "session: Cannot make server socket!\n"); - exit(-1); - } - else { -#ifdef DEBUG - fprintf(stderr, "session: opened SessionServer , fd = %d\n", - server[1].socket); -#endif - FD_SET(server[1].socket,&session_socket_mask); - } - manage_sessions(); - return(0); -} - -@ -\subsection{session} -<>= -/* #define DEBUG */ -#define _SESSION_C - -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<
> - -@ -\section{License} -<>= -/* -Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd. -All rights reserved. - -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions are -met: - - - Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - - - Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in - the documentation and/or other materials provided with the - distribution. - - - Neither the name of The Numerical ALgorithms Group Ltd. nor the - names of its contributors may be used to endorse or promote products - derived from this software without specific prior written permission. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS -IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED -TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A -PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER -OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, -EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, -PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR -PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF -LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING -NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS -SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -*/ - -@ -<<*>>= -<> -<> -@ -\eject -\begin{thebibliography}{99} -\bibitem{1} nothing -\end{thebibliography} -\end{document} diff --git a/src/sman/sman.c b/src/sman/sman.c new file mode 100644 index 00000000..9cb3a0ba --- /dev/null +++ b/src/sman/sman.c @@ -0,0 +1,826 @@ +/* + Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd. + All rights reserved. + + Copyright (C) 2007, Gabriel Dos Reis. + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are + met: + + - Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + + - Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in + the documentation and/or other materials provided with the + distribution. + + - Neither the name of The Numerical ALgorithms Group Ltd. nor the + names of its contributors may be used to endorse or promote products + derived from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS + IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER + OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +#define _SMAN_C + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "axiom-c-macros.h" + +#if defined(SUN4OS5platform) || defined(HP10platform) +#include +#endif + +#include "com.h" +#include "bsdsignal.h" +#include "sman.h" + +#include "bsdsignal.H1" +#include "sockio-c.H1" +#include "openpty.H1" +#include "sman.H1" + +char *ws_path; /* location of the AXIOM executable */ +int start_clef; /* start clef under spad */ +int start_graphics; /* start the viewman */ +int start_ht; /* start hypertex */ +int start_spadclient; /* Start the client spad buffer */ +int start_local_spadclient; /* Start the client spad buffer */ +int use_X; /* Use the X windows environment */ +int server_num; /* AXIOM server number */ +int tpd=0; /* to-print-debug information */ + +/************************************************/ +/* definitions of programs which sman can start */ +/************************************************/ + +char *GraphicsProgram = "$AXIOM/lib/viewman"; +char *HypertexProgram = "$AXIOM/lib/hypertex -s"; +char *ClefProgram = + "$AXIOM/bin/clef -f $AXIOM/lib/command.list -e "; +char *SessionManagerProgram = "$AXIOM/lib/session"; +char *SpadClientProgram = "$AXIOM/lib/spadclient"; +char *PasteFile = NULL; +char *MakeRecordFile = NULL; +char *VerifyRecordFile = NULL; + +SpadProcess *spad_process_list = NULL; +/***************************/ +/* sman defaults file name */ +/***************************/ + +#define SpadDefaultFile "spadprof.input" + +char ClefCommandLine[256]; + +#define BufSize 4096 /* size of communication buffer */ +char big_bad_buf[BufSize]; /* big I/O buffer */ + +Sock *session_io = NULL; /* socket connecting to session manager */ + +/***********************************************************/ +/* Some characters used and externally defined in edible.h */ +/***********************************************************/ + +unsigned char _INTR, _QUIT, _ERASE, _KILL, _EOF, _EOL, _RES1, _RES2; + +/*************************************/ +/* Stuff for opening pseudo-terminal */ +/*************************************/ + +int ptsNum, ptcNum; +char ptsPath[20], ptcPath[20]; + +char **new_envp; /* new environment for AXIOM */ +int child_pid; /* child's process id */ +struct termios oldbuf; /* the original settings */ +struct termios childbuf; /* terminal structure for user i/o */ + + +int death_signal = 0; + +static void +process_arguments(int argc,char ** argv) +{ + int arg; + if (tpd == 1) fprintf(stderr,"sman:process_arguments entered\n"); + for (arg = 1; arg < argc; arg++) { + if (strcmp(argv[arg], "-debug") == 0) + tpd = 1; + else if (strcmp(argv[arg], "-noclef") == 0) + start_clef = 0; + else if (strcmp(argv[arg], "-clef") == 0) + start_clef = 1; + else if (strcmp(argv[arg], "-gr") == 0) + start_graphics = 1; + else if (strcmp(argv[arg], "-nogr") == 0) + start_graphics = 0; + else if (strcmp(argv[arg], "-ht") == 0) + start_ht = 1; + else if (strcmp(argv[arg], "-noht") == 0) + start_ht = 0; + else if (strcmp(argv[arg], "-iw") == 0) + start_spadclient = 1; + else if (strcmp(argv[arg], "-ihere") == 0) + start_local_spadclient = 1; + else if (strcmp(argv[arg], "-noihere") == 0) + start_local_spadclient = 0; + else if (strcmp(argv[arg], "-noiw") == 0) + start_spadclient = 0; + else if (strcmp(argv[arg], "-ws") == 0) + ws_path = argv[++arg]; + else if (strcmp(argv[arg], "-comp") == 0) + ws_path = "$AXIOM/etc/images/comp"; + else if (strcmp(argv[arg], "-nox") == 0) + { + use_X = 0; + start_local_spadclient = 1; + start_spadclient = 0; + start_ht = 0; + start_graphics = 0; + } + else if (strcmp(argv[arg], "-grprog") == 0) + GraphicsProgram = argv[++arg]; + else if (strcmp(argv[arg], "-htprog") == 0) + HypertexProgram = argv[++arg]; + else if (strcmp(argv[arg], "-clefprog") == 0) { + strcpy(ClefCommandLine,argv[++arg]); + ClefProgram = + strcat(ClefCommandLine, " -f $AXIOM/lib/command.list -e "); + } + else if (strcmp(argv[arg], "-sessionprog") == 0) + SessionManagerProgram = argv[++arg]; + else if (strcmp(argv[arg], "-clientprog") == 0) + SpadClientProgram = argv[++arg]; + else if (strcmp(argv[arg], "-rm") == 0) + MakeRecordFile = argv[++arg]; + else if (strcmp(argv[arg], "-rv") == 0) + VerifyRecordFile = argv[++arg]; + else if (strcmp(argv[arg], "-paste") == 0) + PasteFile = argv[++arg]; + else { + fprintf(stderr, "Usage: sman <-clef|-noclef> \ +<-gr|-nogr> <-ht|-noht> <-iw|-noiw> <-nox> <-comp> <-ws spad_workspace> \ +<-grprog path> <-htprog path> <-clefprog path> <-sessionprog path> \ +<-clientprog path>\n"); + exit(-1); + } + } + if (tpd == 1) + { fprintf(stderr," sman "); + if (start_clef == 0) + fprintf(stderr,"-noclef "); + else + fprintf(stderr,"-clef "); + if (start_graphics == 0) + fprintf(stderr,"-nogr "); + else + fprintf(stderr,"-gr "); + if (start_ht == 0) + fprintf(stderr,"-noht "); + else + fprintf(stderr,"-ht "); + if (start_spadclient == 0) + fprintf(stderr,"-noiw "); + else + fprintf(stderr,"-iw "); + if (start_local_spadclient == 0) + fprintf(stderr,"-noihere "); + else + fprintf(stderr,"-ihere "); + if (start_local_spadclient == 0) + fprintf(stderr,"-noihere "); + else + fprintf(stderr,"-ihere "); + if (use_X == 0) + fprintf(stderr,"-nox "); + fprintf(stderr,"-ws "); + fprintf(stderr,"'%s' ",ws_path); + fprintf(stderr,"-grprog "); + fprintf(stderr,"'%s' ",GraphicsProgram); + fprintf(stderr,"-htprog "); + fprintf(stderr,"'%s' ",HypertexProgram); + fprintf(stderr,"-clefprog "); + fprintf(stderr,"'%s' ",ClefCommandLine); + fprintf(stderr,"-sessionprog "); + fprintf(stderr,"'%s' ",SessionManagerProgram); + fprintf(stderr,"-clientprog "); + fprintf(stderr,"'%s' ",SpadClientProgram); + fprintf(stderr,"-rm "); + fprintf(stderr,"'%s' ",MakeRecordFile); + fprintf(stderr,"-rv "); + fprintf(stderr,"'%s' ",VerifyRecordFile); + fprintf(stderr,"-paste "); + fprintf(stderr,"'%s' ",PasteFile); + fprintf(stderr,"\n"); + } + if (tpd == 1) fprintf(stderr,"sman:process_arguments exit\n"); +} + +static int +should_I_clef(void) +{ + return(1); +} + +static int +in_X(void) +{ + if (getenv("DISPLAY")) return 1; + return 0; +} + +static void +set_up_defaults(void) +{ + if (tpd == 1) fprintf(stderr,"sman:set_up_defaults entered\n"); + start_clef = should_I_clef(); + start_graphics = 1; + start_ht = 1; + start_spadclient = 0; + start_local_spadclient = 1; + use_X = isatty(0) && in_X(); + ws_path = "$AXIOM/bin/AXIOMsys"; + if (tpd == 1) fprintf(stderr,"sman:set_up_defaults exit\n"); +} + +static void +process_options(int argc, char **argv) +{ + if (tpd == 1) fprintf(stderr,"sman:process_options entered\n"); + set_up_defaults(); + process_arguments(argc, argv); + if (tpd == 1) fprintf(stderr,"sman:process_options exit\n"); +} + +static void +death_handler(int sig) +{ + death_signal = 1; +} + +static void +sman_catch_signals(void) +{ + + /* Set up the signal handlers for sman */ + bsdSignal(SIGINT, SIG_IGN,RestartSystemCalls); + bsdSignal(SIGTERM, death_handler,RestartSystemCalls); + bsdSignal(SIGQUIT, death_handler,RestartSystemCalls); + bsdSignal(SIGHUP, death_handler,RestartSystemCalls); + bsdSignal(SIGILL, death_handler,RestartSystemCalls); + bsdSignal(SIGTRAP, death_handler,RestartSystemCalls); + bsdSignal(SIGIOT, death_handler,RestartSystemCalls); + bsdSignal(SIGBUS, death_handler,RestartSystemCalls); + bsdSignal(SIGSEGV, death_handler,RestartSystemCalls); + +} + +static void +fix_env(char **envp, int spadnum) +{ + int len, i; + char *sn; + for(len = 0; envp[len] != NULL; len++); + new_envp = (char **) malloc((len + 3) * sizeof(char *)); + new_envp[0] = "SPADSERVER=TRUE"; + sn = (char *) malloc(20 * sizeof(char)); + sprintf(sn, "SPADNUM=%d", spadnum); + new_envp[1] = sn; + for(i=0; i<=len; i++) + new_envp[i+2] = envp[i]; +} + +static void +init_term_io(void) +{ + if(!isatty(0)) return; + if( tcgetattr(0, &oldbuf) == -1) { + perror("getting termios"); + return ; /* exit(-1); */ + } + if( tcgetattr(0, &childbuf) == -1) { + perror("getting termios"); + return ; /* exit(-1); */ + } + _INTR = oldbuf.c_cc[VINTR]; + _QUIT = oldbuf.c_cc[VQUIT]; + _ERASE = oldbuf.c_cc[VERASE]; + _KILL = oldbuf.c_cc[VKILL]; + _EOF = oldbuf.c_cc[VEOF]; + _EOL = oldbuf.c_cc[VEOL]; +} + +static char * +strPrefix(char *prefix,char * s) +{ + while (*prefix != '\0' && *prefix == *s) { + prefix++; + s++; + } + if (*prefix == '\0') return s; + return NULL; +} + +static void +check_spad_proc(char *file, char *prefix) +{ + char *num; + int pid; + if ((num = strPrefix(prefix, file))) { + pid = atoi(num); + if (pid > 2) { + kill(pid, 0); + if (kill(pid, 0) == -1 && errno == ESRCH) { + unlink(file); + } + } + } +} + +static void +clean_up_old_sockets(void) +{ + char com[512], tmp_file[128]; + FILE *file; + int len; + sprintf(tmp_file, "/tmp/socks.%d", server_num); + sprintf(com, "ls /tmp/.d* /tmp/.s* /tmp/.i* /tmp/.h* 2> %s > %s", + tmp_file, tmp_file); + system(com); + file = fopen(tmp_file, "r"); + if (file == NULL) { + fprintf(stderr, "Can't open socket listing file\n"); + return; + } + while(fgets(com, 512, file) != NULL) { + len = strlen(com); + if (len) com[len-1] = '\0'; + else break; + check_spad_proc(com, "/tmp/.d"); + check_spad_proc(com, "/tmp/.s"); + check_spad_proc(com, "/tmp/.i"); + check_spad_proc(com, "/tmp/.h"); + } + fclose(file); + unlink(tmp_file); +} + +static SpadProcess * +fork_you(int death_action) +{ + /* fork a new process, giving it a default death action */ + /* return NULL in child, SpadProcess in parent */ + int child_pid = fork(); + SpadProcess *proc; + if (!child_pid) return NULL; + proc = (SpadProcess *) malloc(sizeof(SpadProcess)); + proc->proc_id = child_pid; + proc->death_action = death_action; + proc->command = NULL; + proc->next = spad_process_list; + spad_process_list = proc; + return proc; +} + +static void +exec_command_env(char *command,char ** env) +{ + char new_command[512]; + sprintf(new_command, "exec %s", command); + execle("/bin/sh","/bin/sh", "-c", new_command, 0, env); +} + +static SpadProcess * +spawn_of_hell(char *command, int death_action) +{ + SpadProcess *proc = fork_you(death_action); + if (proc != NULL) { + proc->command = command; + return proc; + } + exec_command_env(command, new_envp); + return NULL; +} + +static void +start_the_spadclient(void) +{ + char command[256]; + if (start_clef) +#ifdef RIOSplatform + sprintf(command, + "aixterm -sb -sl 500 -name axiomclient -n AXIOM -T AXIOM -e %s %s", + ClefProgram, SpadClientProgram); +#else + sprintf(command, + "xterm -sb -sl 500 -name axiomclient -n AXIOM -T AXIOM -e %s %s", + ClefProgram, SpadClientProgram); +#endif + else +#ifdef RIOSplatform + sprintf(command, + "aixterm -sb -sl 500 -name axiomclient -n AXIOM -T AXIOM -e %s", + SpadClientProgram); +#else + sprintf(command, + "xterm -sb -sl 500 -name axiomclient -n AXIOM -T AXIOM -e %s", + SpadClientProgram); +#endif + if (tpd == 1) + fprintf(stderr,"sman:start_the_spadclient: %s\n",command); + spawn_of_hell(command, NadaDelShitsky); +} + +static void +start_the_local_spadclient(void) +{ + char command[256]; + if (start_clef) + sprintf(command, "%s %s", ClefProgram, SpadClientProgram); + else + sprintf(command, "%s", SpadClientProgram); + if (tpd == 1) + fprintf(stderr,"sman:start_the_local_spadclient: %s\n",command); + spawn_of_hell(command, NadaDelShitsky); +} + +static void +start_the_session_manager(void) +{ + spawn_of_hell(SessionManagerProgram, Die); +} + +static void +start_the_hypertex(void) +{ + char prog[512]; + + if (PasteFile){ + sprintf(prog, "%s -k -ip %s", HypertexProgram, PasteFile); + spawn_of_hell(prog, NadaDelShitsky); + } + else if (MakeRecordFile){ + sprintf(prog, "%s -k -rm %s", HypertexProgram,MakeRecordFile ); + spawn_of_hell(prog, NadaDelShitsky); + } + else if (VerifyRecordFile){ + sprintf(prog, "%s -k -rv %s", HypertexProgram, VerifyRecordFile); + spawn_of_hell(prog, NadaDelShitsky); + } + else spawn_of_hell(HypertexProgram, CleanHypertexSocket); +} + +static void +start_the_graphics(void) +{ + spawn_of_hell(GraphicsProgram, DoItAgain); +} + +/* Start the AXIOM session in a separate process, */ +/* using a pseudo-terminal to catch all input and output */ +static void +fork_Axiom(void) +{ + char augmented_ws_path[256]; /* will append directory path */ + char *tmp_pointer; + SpadProcess *proc; + + proc = fork_you(Die); + child_pid = (proc == NULL ? 0 : proc->proc_id); + switch(child_pid) { + case -1 : + fprintf(stderr, "Can't create a new process \n"); + exit(0); + case 0: + /* Dissasociate from my parents group so all my child processes */ + /* look at my terminal as the controlling terminal for the */ + /* group */ + + if(setsid() < 0) { + perror("Dissassociating from parents group"); + exit(-1); + } + + close(ptsNum); + /* Now reopen the server side, so that pg, su, etc. work properly */ + + if ((ptsNum = open(ptsPath, O_RDWR)) < 0 ) { + perror("fork_Axiom: Failed to reopen server"); + exit(-1); + } +#if defined(SUN4OS5platform) || defined(HP10platform) + ioctl(ptsNum,I_PUSH,"ptem"); + ioctl(ptsNum,I_PUSH,"ldterm"); +#endif + + /* since I am the child, I can close ptc, and dup pts for all its */ + /* standard descriptors */ + + if( (dup2(ptsNum, 0) == -1) || + (dup2(ptsNum, 1) == -1) || + (dup2(ptsNum, 2) == -1) ) { + perror("trying to dupe the child"); + exit(-1); + } + close(ptcNum); + close(ptsNum); + + + /* I also have to turn off echoing, since I am echoing all the */ + /* input myself */ + + childbuf.c_lflag &= ~ECHO; + if( tcsetattr(0, TCSAFLUSH, &childbuf) == -1) { + perror("setting the term buffer"); + exit(-1); + } + strcpy(augmented_ws_path,ws_path); /* write the name */ + strcat(augmented_ws_path," "); /* space */ + strcat(augmented_ws_path,ws_path); /* name again */ + tmp_pointer = (char *) + strrchr(augmented_ws_path,'/'); /*pointer to last / */ + *(++tmp_pointer) = '\0'; + exec_command_env(augmented_ws_path, new_envp); + + /* fprintf(stderr, "Cannot execute the %s system.\n", ws_path); */ + + exit(0); + } +} + +static void +start_the_Axiom(char **envp) +{ + server_num = make_server_number(); + clean_up_old_sockets(); + if (server_num == -1) { + fprintf(stderr, "could not get an AXIOM server number\n"); + exit(-1); + } + if (ptyopen(&ptcNum, &ptsNum, ptcPath, ptsPath) == -1) { + perror("start_the_Axiom: ptyopen failed"); + exit(-1); + } + fix_env(envp, server_num); + fork_Axiom(); + close(ptsNum); +} + +static void +clean_hypertex_socket(void) +{ + char name[256]; + sprintf(name, "%s%d", MenuServerName, server_num); + unlink(name); +} + +static void +clean_up_sockets(void) +{ + char name[256]; + sprintf(name, "%s%d", SpadServer, server_num); + unlink(name); + sprintf(name, "%s%d", SessionServer, server_num); + unlink(name); + sprintf(name, "%s%d", SessionIOName, server_num); + unlink(name); + clean_hypertex_socket(); +} + +static void +read_from_spad_io(int ptcNum) +{ + int ret_code = 0, i=0; + static int mes_len =0; + ret_code = read(ptcNum, big_bad_buf, BufSize); + if (ret_code == -1) { + clean_up_sockets(); + exit(-1); + } + if (session_io == NULL) { + if (ret_code < mes_len) + mes_len -= ret_code; + else { + if (mes_len > 0) { + i = mes_len; + mes_len = 0; + } + else + i = 0; + ret_code = write(1, big_bad_buf+i, ret_code-i); + } + } + else + ret_code = swrite(session_io, big_bad_buf, ret_code, + "writing to session man"); + if (ret_code == -1) { + perror("writing output to session manager"); + clean_up_sockets(); + exit(-1); + } +} + +static void +read_from_manager(int ptcNum) +{ + int ret_code; + ret_code = sread(session_io, big_bad_buf, BufSize, "reading session io"); + if (ret_code == -1) { + return; + } + ret_code = write(ptcNum, big_bad_buf, ret_code); + if (ret_code == -1) { + return; + } +} + +static void +manage_spad_io(int ptcNum) +{ + int ret_code, i, p; + fd_set rd; + while (1) { + rd = socket_mask; + FD_SET(ptcNum, &rd); + if (session_io != NULL) + FD_SET(session_io->socket, &rd); + ret_code = sselect(FD_SETSIZE, &rd, 0, 0, NULL); + if (ret_code == -1) { + perror("Session manager select"); + clean_up_sockets(); + exit(-1); + } + if (FD_ISSET(ptcNum, &rd)) { + read_from_spad_io(ptcNum); + } + for(i=0; i<2; i++) { + if (server[i].socket > 0 && FD_ISSET(server[i].socket, &rd)) { + p = accept_connection(server+i); + switch(p) { + case SessionIO: + session_io = purpose_table[SessionIO]; + /* printf("connected session manager\n\r");*/ + printf("\n"); + break; + default: + printf("sman: Unkown connection request type: %d\n", p); + break; + } + } + } + if (session_io != NULL && FD_ISSET(session_io->socket, &rd)) { + read_from_manager(ptcNum); + } + } +} + +static void +init_spad_process_list(void) +{ + spad_process_list = NULL; +} + +#if 0 +static void +print_spad_process_list() +{ + SpadProcess *proc; + for(proc = spad_process_list; proc != NULL; proc = proc->next) + fprintf(stderr, "proc_id = %d, death_action = %d\n", proc->proc_id, + proc->death_action); +} +#endif + +static SpadProcess * +find_child(int proc_id) +{ + SpadProcess *proc; + for(proc = spad_process_list; proc != NULL; proc = proc->next) + if (proc->proc_id == proc_id) return proc; + return NULL; +} + +static void +kill_all_children(void) +{ + char name[256]; + SpadProcess *proc; + + + for(proc = spad_process_list; proc != NULL; proc = proc->next) { + kill(proc->proc_id, SIGTERM); + } + sprintf(name, "/tmp/hyper%d.input",server_num); + unlink(name); + +} + +static void +clean_up_terminal(void) +{ + tcsetattr(0, TCSAFLUSH, &oldbuf); +} + +static void +monitor_children(void) +{ + int dead_baby, stat; + SpadProcess *proc; + while (1) { + stat = 0; + dead_baby = wait(&stat); + /* Check the value of dead_baby, since wait may have returned + a pid but subsequently we have received a signal. Yeuch! */ + if (dead_baby == -1 && death_signal) { + kill_all_children(); + clean_up_sockets(); + sleep(2); + exit(0); + } + + if (dead_baby == -1) { + fprintf(stderr, "sman: wait returned -1\n"); + continue; + } + proc = find_child(dead_baby); + if (proc == NULL) { + /* fprintf(stderr, "sman: %d is not known to be a child process\n", + dead_baby); + */ + continue; + } + switch(proc->death_action) { + case Die: + kill_all_children(); + clean_up_sockets(); + sleep(2); + exit(0); + case NadaDelShitsky: + break; + case DoItAgain: + spawn_of_hell(proc->command, DoItAgain); + break; + case CleanHypertexSocket: + clean_hypertex_socket(); + break; + } + } +} + +int +main(int argc, char *argv[],char *envp[]) +{ + if (tpd == 1) fprintf(stderr,"sman:main entered\n"); + bsdSignal(SIGINT, SIG_IGN,RestartSystemCalls); + process_options(argc, argv); + + init_term_io(); + init_spad_process_list(); + start_the_Axiom(envp); + if (open_server(SessionIOName) == -2) { + fprintf(stderr, "Fatal error opening I/O socket\n"); + clean_up_sockets(); + exit(-1); + } + start_the_session_manager(); + if (start_spadclient) start_the_spadclient(); + if (start_local_spadclient) start_the_local_spadclient(); + if (start_ht) start_the_hypertex(); + if (start_graphics) start_the_graphics(); + sleep(1); + + if (fork_you(Die) != NULL) { + sman_catch_signals(); + monitor_children(); + exit(0); + } + manage_spad_io(ptcNum); + if (tpd == 1) fprintf(stderr,"sman:main exit\n"); + return(0); +} + + diff --git a/src/sman/sman.c.pamphlet b/src/sman/sman.c.pamphlet deleted file mode 100644 index 84243dd9..00000000 --- a/src/sman/sman.c.pamphlet +++ /dev/null @@ -1,1121 +0,0 @@ -\documentclass{article} -\usepackage{axiom} - -\title{\$SPAD/src/sman sman} -\author{The Axiom Team} - -\begin{document} -\maketitle - -\begin{abstract} -\end{abstract} -\eject - -\tableofcontents -\eject - -\section{sman.h} -<>= -/* Process control definitions. Used by fork_you and spawn_of_hell */ - -/* When a process dies it kills off everything else */ -#define Die 1 -/* When a process dies, do nothing */ -#define NadaDelShitsky 2 -/* When a process dies start it up again */ -#define DoItAgain 3 -/* When hypertex dies, clean its socket */ -#define CleanHypertexSocket 4 - -typedef struct spad_proc { - int proc_id; /* process id of child */ - int death_action; /* one of the above constants */ - char *command; /* sh command line to restart the process */ - struct spad_proc *next; -} SpadProcess; - -@ -\section{sman} -\subsection{includes} -<>= -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "axiom-c-macros.h" - -#if defined(SUN4OS5platform) || defined(HP10platform) -#include -#endif - -#include "com.h" -#include "bsdsignal.h" -#include "sman.h" - -#include "bsdsignal.H1" -#include "sockio-c.H1" -#include "openpty.H1" -#include "sman.H1" - -@ -\subsection{variables} -We add a debug flag so we can print information about what \Tool{sman} -is trying to do. This change is pervasive as it touches nearly every -routine. -<>= -int tpd=0; /* to-print-debug information */ -@ -This line is no longer used. We would completely elide it except that -it would raise spurious issues about deleting credit and/or copyright -information. -\begin{verbatim} -char *start_line = -"AKCL (Austin Kyoto Common Lisp) Version(1.568) Thu Aug 22 16:49:01 EDT 1991\ -\r\nContains Enhancements by W. Schelter\r\n"; -\end{verbatim} -We modified the place where the command list lives. -The command list used to live in -\begin{verbatim} -$AXIOM/../../share/algebra/command.list -\end{verbatim} -but the open source version of the system no longer has a share -subdirectory so we move this to the lib subdirectory. -<>= -char *ClefProgram = - "$AXIOM/bin/clef -f $AXIOM/lib/command.list -e "; -@ -and we change the command line arguments -<>= - ClefProgram = - strcat(ClefCommandLine, " -f $AXIOM/lib/command.list -e "); -@ -<>= -char *ws_path; /* location of the AXIOM executable */ -int start_clef; /* start clef under spad */ -int start_graphics; /* start the viewman */ -int start_nagman; /* start the nagman */ -int start_ht; /* start hypertex */ -int start_spadclient; /* Start the client spad buffer */ -int start_local_spadclient; /* Start the client spad buffer */ -int use_X; /* Use the X windows environment */ -int server_num; /* AXIOM server number */ -<> - -/************************************************/ -/* definitions of programs which sman can start */ -/************************************************/ - -char *GraphicsProgram = "$AXIOM/lib/viewman"; -char *NagManagerProgram = "$AXIOM/lib/nagman"; -char *HypertexProgram = "$AXIOM/lib/hypertex -s"; -<> -char *SessionManagerProgram = "$AXIOM/lib/session"; -char *SpadClientProgram = "$AXIOM/lib/spadclient"; -char *PasteFile = NULL; -char *MakeRecordFile = NULL; -char *VerifyRecordFile = NULL; - -SpadProcess *spad_process_list = NULL; -/***************************/ -/* sman defaults file name */ -/***************************/ - -#define SpadDefaultFile "spadprof.input" - -char ClefCommandLine[256]; - -#define BufSize 4096 /* size of communication buffer */ -char big_bad_buf[BufSize]; /* big I/O buffer */ - -Sock *session_io = NULL; /* socket connecting to session manager */ - -/***********************************************************/ -/* Some characters used and externally defined in edible.h */ -/***********************************************************/ - -unsigned char _INTR, _QUIT, _ERASE, _KILL, _EOF, _EOL, _RES1, _RES2; - -/*************************************/ -/* Stuff for opening pseudo-terminal */ -/*************************************/ - -int ptsNum, ptcNum; -char ptsPath[20], ptcPath[20]; - -char **new_envp; /* new environment for AXIOM */ -int child_pid; /* child's process id */ -struct termios oldbuf; /* the original settings */ -struct termios childbuf; /* terminal structure for user i/o */ - - -int nagman_signal=0; -int death_signal = 0; - -@ -\subsection{process\_arguments} -<>= -static void -process_arguments(int argc,char ** argv) -{ - int arg; - if (tpd == 1) fprintf(stderr,"sman:process_arguments entered\n"); - for (arg = 1; arg < argc; arg++) { - if (strcmp(argv[arg], "-debug") == 0) - tpd = 1; - else if (strcmp(argv[arg], "-noclef") == 0) - start_clef = 0; - else if (strcmp(argv[arg], "-clef") == 0) - start_clef = 1; - else if (strcmp(argv[arg], "-gr") == 0) - start_graphics = 1; - else if (strcmp(argv[arg], "-nogr") == 0) - start_graphics = 0; - else if (strcmp(argv[arg], "-nag") == 0) - start_nagman = 1; - else if (strcmp(argv[arg], "-nonag") == 0) - start_nagman = 0; - else if (strcmp(argv[arg], "-ht") == 0) - start_ht = 1; - else if (strcmp(argv[arg], "-noht") == 0) - start_ht = 0; - else if (strcmp(argv[arg], "-iw") == 0) - start_spadclient = 1; - else if (strcmp(argv[arg], "-ihere") == 0) - start_local_spadclient = 1; - else if (strcmp(argv[arg], "-noihere") == 0) - start_local_spadclient = 0; - else if (strcmp(argv[arg], "-noiw") == 0) - start_spadclient = 0; - else if (strcmp(argv[arg], "-ws") == 0) - ws_path = argv[++arg]; - else if (strcmp(argv[arg], "-comp") == 0) - ws_path = "$AXIOM/etc/images/comp"; - else if (strcmp(argv[arg], "-nox") == 0) - { - use_X = 0; - start_local_spadclient = 1; - start_spadclient = 0; - start_ht = 0; - start_graphics = 0; - } - else if (strcmp(argv[arg], "-grprog") == 0) - GraphicsProgram = argv[++arg]; - else if (strcmp(argv[arg], "-nagprog") == 0) - NagManagerProgram = argv[++arg]; - else if (strcmp(argv[arg], "-htprog") == 0) - HypertexProgram = argv[++arg]; - else if (strcmp(argv[arg], "-clefprog") == 0) { - strcpy(ClefCommandLine,argv[++arg]); -<> - } - else if (strcmp(argv[arg], "-sessionprog") == 0) - SessionManagerProgram = argv[++arg]; - else if (strcmp(argv[arg], "-clientprog") == 0) - SpadClientProgram = argv[++arg]; - else if (strcmp(argv[arg], "-rm") == 0) - MakeRecordFile = argv[++arg]; - else if (strcmp(argv[arg], "-rv") == 0) - VerifyRecordFile = argv[++arg]; - else if (strcmp(argv[arg], "-paste") == 0) - PasteFile = argv[++arg]; - else { - fprintf(stderr, "Usage: sman <-clef|-noclef> \ -<-gr|-nogr> <-ht|-noht> <-iw|-noiw> <-nag|-nonag> <-nox> <-comp> <-ws spad_workspace> \ -<-grprog path> <-htprog path> <-clefprog path> <-sessionprog path> <-nagprog path> \ -<-clientprog path>\n"); - exit(-1); - } - } - if (tpd == 1) - { fprintf(stderr," sman "); - if (start_clef == 0) - fprintf(stderr,"-noclef "); - else - fprintf(stderr,"-clef "); - if (start_graphics == 0) - fprintf(stderr,"-nogr "); - else - fprintf(stderr,"-gr "); - if (start_nagman == 0) - fprintf(stderr,"-nonag "); - else - fprintf(stderr,"-nag "); - if (start_ht == 0) - fprintf(stderr,"-noht "); - else - fprintf(stderr,"-ht "); - if (start_spadclient == 0) - fprintf(stderr,"-noiw "); - else - fprintf(stderr,"-iw "); - if (start_local_spadclient == 0) - fprintf(stderr,"-noihere "); - else - fprintf(stderr,"-ihere "); - if (start_local_spadclient == 0) - fprintf(stderr,"-noihere "); - else - fprintf(stderr,"-ihere "); - if (use_X == 0) - fprintf(stderr,"-nox "); - fprintf(stderr,"-ws "); - fprintf(stderr,"'%s' ",ws_path); - fprintf(stderr,"-grprog "); - fprintf(stderr,"'%s' ",GraphicsProgram); - fprintf(stderr,"-nagprog "); - fprintf(stderr,"'%s' ",NagManagerProgram); - fprintf(stderr,"-htprog "); - fprintf(stderr,"'%s' ",HypertexProgram); - fprintf(stderr,"-clefprog "); - fprintf(stderr,"'%s' ",ClefCommandLine); - fprintf(stderr,"-sessionprog "); - fprintf(stderr,"'%s' ",SessionManagerProgram); - fprintf(stderr,"-clientprog "); - fprintf(stderr,"'%s' ",SpadClientProgram); - fprintf(stderr,"-rm "); - fprintf(stderr,"'%s' ",MakeRecordFile); - fprintf(stderr,"-rv "); - fprintf(stderr,"'%s' ",VerifyRecordFile); - fprintf(stderr,"-paste "); - fprintf(stderr,"'%s' ",PasteFile); - fprintf(stderr,"\n"); - } - if (tpd == 1) fprintf(stderr,"sman:process_arguments exit\n"); -} - -@ -\subsection{should\_I\_clef} -<>= -static int -should_I_clef(void) -{ - return(1); -} - -@ -\subsection{in\_X} -<>= -static int -in_X(void) -{ - if (getenv("DISPLAY")) return 1; - return 0; -} - -@ -\subsection{set\_up\_defaults} -These are the default values for sman. A '1' value means that -sman will try to start the given process, a '0' value means not -starting the process. - -We do not have replacement code for the [[nagman]] process nor -do we have a copy of the [[nag fortran library]] to test the process. -Until this changes we set [[start_nagman = 0]] in order to disable -starting this process by default. -<>= -static void -set_up_defaults(void) -{ - if (tpd == 1) fprintf(stderr,"sman:set_up_defaults entered\n"); - start_clef = should_I_clef(); - start_graphics = 1; - start_nagman = 0; - start_ht = 1; - start_spadclient = 0; - start_local_spadclient = 1; - use_X = isatty(0) && in_X(); - ws_path = "$AXIOM/bin/AXIOMsys"; - if (tpd == 1) fprintf(stderr,"sman:set_up_defaults exit\n"); -} - -@ -\subsection{process\_options} -<>= -static void -process_options(int argc, char **argv) -{ - if (tpd == 1) fprintf(stderr,"sman:process_options entered\n"); - set_up_defaults(); - process_arguments(argc, argv); - if (tpd == 1) fprintf(stderr,"sman:process_options exit\n"); -} - -@ -\subsection{death\_handler} -<>= -static void -death_handler(int sig) -{ - death_signal = 1; -} - -@ -\subsection{nagman\_handler} -<>= -static void -nagman_handler(int sig) -{ - nagman_signal=1; -} - -@ -\subsection{sman\_catch\_signals} -<>= -static void -sman_catch_signals(void) -{ - - /* Set up the signal handlers for sman */ - bsdSignal(SIGINT, SIG_IGN,RestartSystemCalls); - bsdSignal(SIGTERM, death_handler,RestartSystemCalls); - bsdSignal(SIGQUIT, death_handler,RestartSystemCalls); - bsdSignal(SIGHUP, death_handler,RestartSystemCalls); - bsdSignal(SIGILL, death_handler,RestartSystemCalls); - bsdSignal(SIGTRAP, death_handler,RestartSystemCalls); - bsdSignal(SIGIOT, death_handler,RestartSystemCalls); - bsdSignal(SIGBUS, death_handler,RestartSystemCalls); - bsdSignal(SIGSEGV, death_handler,RestartSystemCalls); - /* don't restart wait call on SIGUSR1 */ - bsdSignal(SIGUSR1, nagman_handler,DontRestartSystemCalls); - /* ONLY nagman should send this. - If an error (such as C-c) interrupts a NAGLINK call, nagman - gets a signal to clean up. We need to start another nagman - almost immediately to process the next NAGLINK request. - Since nagman takes a while to clean up, we treat it specially. - nagman should send a signal (USR1) to sman. - sman should respond by spawning a new nagman. - - so nagman is NOT a DoItAgain but a NadaDelShitsky. - - The USR1 mechanism does not work for HPUX 9 - use DoItAgain - */ - -} - -@ -\subsection{fix\_env} -insert SPADSERVER and SPADNUM variables into the environemnt -<>= -static void -fix_env(char **envp, int spadnum) -{ - int len, i; - char *sn; - for(len = 0; envp[len] != NULL; len++); - new_envp = (char **) malloc((len + 3) * sizeof(char *)); - new_envp[0] = "SPADSERVER=TRUE"; - sn = (char *) malloc(20 * sizeof(char)); - sprintf(sn, "SPADNUM=%d", spadnum); - new_envp[1] = sn; - for(i=0; i<=len; i++) - new_envp[i+2] = envp[i]; -} - -@ -\subsection{init\_term\_io} -<>= -static void -init_term_io(void) -{ - if(!isatty(0)) return; - if( tcgetattr(0, &oldbuf) == -1) { - perror("getting termios"); - return ; /* exit(-1); */ - } - if( tcgetattr(0, &childbuf) == -1) { - perror("getting termios"); - return ; /* exit(-1); */ - } - _INTR = oldbuf.c_cc[VINTR]; - _QUIT = oldbuf.c_cc[VQUIT]; - _ERASE = oldbuf.c_cc[VERASE]; - _KILL = oldbuf.c_cc[VKILL]; - _EOF = oldbuf.c_cc[VEOF]; - _EOL = oldbuf.c_cc[VEOL]; -} - -@ -\subsection{strPrefix} -<>= -static char * -strPrefix(char *prefix,char * s) -{ - while (*prefix != '\0' && *prefix == *s) { - prefix++; - s++; - } - if (*prefix == '\0') return s; - return NULL; -} - -@ -\subsection{check\_spad\_proc} -<>= -static void -check_spad_proc(char *file, char *prefix) -{ - char *num; - int pid; - if ((num = strPrefix(prefix, file))) { - pid = atoi(num); - if (pid > 2) { - kill(pid, 0); - if (kill(pid, 0) == -1 && errno == ESRCH) { - unlink(file); - } - } - } -} - -@ -\subsection{clean\_up\_old\_sockets} -<>= -static void -clean_up_old_sockets(void) -{ - char com[512], tmp_file[128]; - FILE *file; - int len; - sprintf(tmp_file, "/tmp/socks.%d", server_num); - sprintf(com, "ls /tmp/.d* /tmp/.s* /tmp/.i* /tmp/.h* 2> %s > %s", - tmp_file, tmp_file); - system(com); - file = fopen(tmp_file, "r"); - if (file == NULL) { - fprintf(stderr, "Can't open socket listing file\n"); - return; - } - while(fgets(com, 512, file) != NULL) { - len = strlen(com); - if (len) com[len-1] = '\0'; - else break; - check_spad_proc(com, "/tmp/.d"); - check_spad_proc(com, "/tmp/.s"); - check_spad_proc(com, "/tmp/.i"); - check_spad_proc(com, "/tmp/.h"); - } - fclose(file); - unlink(tmp_file); -} - -@ -\subsection{fork\_you} -<>= -static SpadProcess * -fork_you(int death_action) -{ - /* fork a new process, giving it a default death action */ - /* return NULL in child, SpadProcess in parent */ - int child_pid = fork(); - SpadProcess *proc; - if (!child_pid) return NULL; - proc = (SpadProcess *) malloc(sizeof(SpadProcess)); - proc->proc_id = child_pid; - proc->death_action = death_action; - proc->command = NULL; - proc->next = spad_process_list; - spad_process_list = proc; - return proc; -} - -@ -\subsection{exec\_command\_env} -<>= -static void -exec_command_env(char *command,char ** env) -{ - char new_command[512]; - sprintf(new_command, "exec %s", command); - execle("/bin/sh","/bin/sh", "-c", new_command, 0, env); -} - -@ -\subsection{spawn\_of\_hell} -<>= -static SpadProcess * -spawn_of_hell(char *command, int death_action) -{ - SpadProcess *proc = fork_you(death_action); - if (proc != NULL) { - proc->command = command; - return proc; - } - exec_command_env(command, new_envp); - return NULL; -} - -@ -\subsection{start\_the\_spadclient} -run a AXIOM client in the main process -<>= -static void -start_the_spadclient(void) -{ - char command[256]; - if (start_clef) -#ifdef RIOSplatform - sprintf(command, - "aixterm -sb -sl 500 -name axiomclient -n AXIOM -T AXIOM -e %s %s", - ClefProgram, SpadClientProgram); -#else - sprintf(command, - "xterm -sb -sl 500 -name axiomclient -n AXIOM -T AXIOM -e %s %s", - ClefProgram, SpadClientProgram); -#endif - else -#ifdef RIOSplatform - sprintf(command, - "aixterm -sb -sl 500 -name axiomclient -n AXIOM -T AXIOM -e %s", - SpadClientProgram); -#else - sprintf(command, - "xterm -sb -sl 500 -name axiomclient -n AXIOM -T AXIOM -e %s", - SpadClientProgram); -#endif - if (tpd == 1) - fprintf(stderr,"sman:start_the_spadclient: %s\n",command); - spawn_of_hell(command, NadaDelShitsky); -} - -@ -\subsection{start\_the\_local\_spadclient} -<>= -static void -start_the_local_spadclient(void) -{ - char command[256]; - if (start_clef) - sprintf(command, "%s %s", ClefProgram, SpadClientProgram); - else - sprintf(command, "%s", SpadClientProgram); - if (tpd == 1) - fprintf(stderr,"sman:start_the_local_spadclient: %s\n",command); - spawn_of_hell(command, NadaDelShitsky); -} - -@ -\subsection{start\_the\_nagman} -<>= -static void -start_the_nagman(void) -{ -#if defined(HP9platform) - spawn_of_hell(NagManagerProgram,DoItAgain); -#else - spawn_of_hell(NagManagerProgram,NadaDelShitsky ); -#endif -} - -@ -\subsection{start\_the\_session\_manager} -<>= -static void -start_the_session_manager(void) -{ - spawn_of_hell(SessionManagerProgram, Die); -} - -@ -\subsection{start\_the\_hypertex} -<>= -static void -start_the_hypertex(void) -{ - char prog[512]; - - if (PasteFile){ - sprintf(prog, "%s -k -ip %s", HypertexProgram, PasteFile); - spawn_of_hell(prog, NadaDelShitsky); - } - else if (MakeRecordFile){ - sprintf(prog, "%s -k -rm %s", HypertexProgram,MakeRecordFile ); - spawn_of_hell(prog, NadaDelShitsky); - } - else if (VerifyRecordFile){ - sprintf(prog, "%s -k -rv %s", HypertexProgram, VerifyRecordFile); - spawn_of_hell(prog, NadaDelShitsky); - } - else spawn_of_hell(HypertexProgram, CleanHypertexSocket); -} - -@ -\subsection{start\_the\_graphics} -<>= -static void -start_the_graphics(void) -{ - spawn_of_hell(GraphicsProgram, DoItAgain); -} - -@ -\subsection{fork\_Axiom} -<>= -/* Start the AXIOM session in a separate process, */ -/* using a pseudo-terminal to catch all input and output */ -static void -fork_Axiom(void) -{ - char augmented_ws_path[256]; /* will append directory path */ - char *tmp_pointer; - SpadProcess *proc; - - proc = fork_you(Die); - child_pid = (proc == NULL ? 0 : proc->proc_id); - switch(child_pid) { - case -1 : - fprintf(stderr, "Can't create a new process \n"); - exit(0); - case 0: - /* Dissasociate from my parents group so all my child processes */ - /* look at my terminal as the controlling terminal for the */ - /* group */ - - if(setsid() < 0) { - perror("Dissassociating from parents group"); - exit(-1); - } - - close(ptsNum); - /* Now reopen the server side, so that pg, su, etc. work properly */ - - if ((ptsNum = open(ptsPath, O_RDWR)) < 0 ) { - perror("fork_Axiom: Failed to reopen server"); - exit(-1); - } -#if defined(SUN4OS5platform) || defined(HP10platform) - ioctl(ptsNum,I_PUSH,"ptem"); - ioctl(ptsNum,I_PUSH,"ldterm"); -#endif - - /* since I am the child, I can close ptc, and dup pts for all its */ - /* standard descriptors */ - - if( (dup2(ptsNum, 0) == -1) || - (dup2(ptsNum, 1) == -1) || - (dup2(ptsNum, 2) == -1) ) { - perror("trying to dupe the child"); - exit(-1); - } - close(ptcNum); - close(ptsNum); - - - /* I also have to turn off echoing, since I am echoing all the */ - /* input myself */ - - childbuf.c_lflag &= ~ECHO; - if( tcsetattr(0, TCSAFLUSH, &childbuf) == -1) { - perror("setting the term buffer"); - exit(-1); - } - strcpy(augmented_ws_path,ws_path); /* write the name */ - strcat(augmented_ws_path," "); /* space */ - strcat(augmented_ws_path,ws_path); /* name again */ - tmp_pointer = (char *) - strrchr(augmented_ws_path,'/'); /*pointer to last / */ - *(++tmp_pointer) = '\0'; - exec_command_env(augmented_ws_path, new_envp); - - /* fprintf(stderr, "Cannot execute the %s system.\n", ws_path); */ - - exit(0); - } -} - -@ -\subsection{start\_the\_Axiom} -<>= -static void -start_the_Axiom(char **envp) -{ - server_num = make_server_number(); - clean_up_old_sockets(); - if (server_num == -1) { - fprintf(stderr, "could not get an AXIOM server number\n"); - exit(-1); - } - if (ptyopen(&ptcNum, &ptsNum, ptcPath, ptsPath) == -1) { - perror("start_the_Axiom: ptyopen failed"); - exit(-1); - } - fix_env(envp, server_num); - fork_Axiom(); - close(ptsNum); -} - -@ -\subsection{clean\_up\_sockets} -<>= -static void -clean_hypertex_socket(void) -{ - char name[256]; - sprintf(name, "%s%d", MenuServerName, server_num); - unlink(name); -} - -static void -clean_up_sockets(void) -{ - char name[256]; - sprintf(name, "%s%d", SpadServer, server_num); - unlink(name); - sprintf(name, "%s%d", SessionServer, server_num); - unlink(name); - sprintf(name, "%s%d", SessionIOName, server_num); - unlink(name); - clean_hypertex_socket(); -} - -@ -\subsection{read\_from\_spad\_io} -<>= -static void -read_from_spad_io(int ptcNum) -{ - int ret_code = 0, i=0; - static int mes_len =0; - ret_code = read(ptcNum, big_bad_buf, BufSize); - if (ret_code == -1) { - clean_up_sockets(); - exit(-1); - } - if (session_io == NULL) { - if (ret_code < mes_len) - mes_len -= ret_code; - else { - if (mes_len > 0) { - i = mes_len; - mes_len = 0; - } - else - i = 0; - ret_code = write(1, big_bad_buf+i, ret_code-i); - } - } - else - ret_code = swrite(session_io, big_bad_buf, ret_code, - "writing to session man"); - if (ret_code == -1) { - perror("writing output to session manager"); - clean_up_sockets(); - exit(-1); - } -} - -@ -\subsection{read\_from\_manager} -<>= -static void -read_from_manager(int ptcNum) -{ - int ret_code; - ret_code = sread(session_io, big_bad_buf, BufSize, "reading session io"); - if (ret_code == -1) { - return; - } - ret_code = write(ptcNum, big_bad_buf, ret_code); - if (ret_code == -1) { - return; - } -} - -@ -\subsection{manage\_spad\_io} -<>= -static void -manage_spad_io(int ptcNum) -{ - int ret_code, i, p; - fd_set rd; - while (1) { - rd = socket_mask; - FD_SET(ptcNum, &rd); - if (session_io != NULL) - FD_SET(session_io->socket, &rd); - ret_code = sselect(FD_SETSIZE, &rd, 0, 0, NULL); - if (ret_code == -1) { - perror("Session manager select"); - clean_up_sockets(); - exit(-1); - } - if (FD_ISSET(ptcNum, &rd)) { - read_from_spad_io(ptcNum); - } - for(i=0; i<2; i++) { - if (server[i].socket > 0 && FD_ISSET(server[i].socket, &rd)) { - p = accept_connection(server+i); - switch(p) { - case SessionIO: - session_io = purpose_table[SessionIO]; - /* printf("connected session manager\n\r");*/ - printf("\n"); - break; - default: - printf("sman: Unkown connection request type: %d\n", p); - break; - } - } - } - if (session_io != NULL && FD_ISSET(session_io->socket, &rd)) { - read_from_manager(ptcNum); - } - } -} - -@ -\subsection{init\_spad\_process\_list} -<>= -static void -init_spad_process_list(void) -{ - spad_process_list = NULL; -} - -@ -\subsection{print\_spad\_process\_list} -<>= -#if 0 -static void -print_spad_process_list() -{ - SpadProcess *proc; - for(proc = spad_process_list; proc != NULL; proc = proc->next) - fprintf(stderr, "proc_id = %d, death_action = %d\n", proc->proc_id, - proc->death_action); -} -#endif - -@ -\subsection{find\_child} -<>= -static SpadProcess * -find_child(int proc_id) -{ - SpadProcess *proc; - for(proc = spad_process_list; proc != NULL; proc = proc->next) - if (proc->proc_id == proc_id) return proc; - return NULL; -} - -@ -\subsection{kill\_all\_children} -<>= -static void -kill_all_children(void) -{ - char name[256]; - SpadProcess *proc; - - - for(proc = spad_process_list; proc != NULL; proc = proc->next) { - kill(proc->proc_id, SIGTERM); - } - sprintf(name, "/tmp/hyper%d.input",server_num); - unlink(name); - -} - -@ -\subsection{clean\_up\_terminal} -<>= -static void -clean_up_terminal(void) -{ - tcsetattr(0, TCSAFLUSH, &oldbuf); -} - -@ -\subsection{monitor\_children} -<>= -static void -monitor_children(void) -{ - int dead_baby, stat; - SpadProcess *proc; - while (1) { - stat = 0; - dead_baby = wait(&stat); - /* Check the value of dead_baby, since wait may have returned - a pid but subsequently we have received a signal. Yeuch! */ - if (dead_baby == -1 && death_signal) { - kill_all_children(); - clean_up_sockets(); - sleep(2); - exit(0); - } - /* Check the value of dead_baby, since wait may have returned - a pid but subsequently we have received a signal. Yeuch! */ - if(dead_baby == -1 && nagman_signal) { - nagman_signal=0; - spawn_of_hell(NagManagerProgram,NadaDelShitsky); - continue; - } - - if (dead_baby == -1) { - fprintf(stderr, "sman: wait returned -1\n"); - continue; - } - proc = find_child(dead_baby); - if (proc == NULL) { - /* fprintf(stderr, "sman: %d is not known to be a child process\n", - dead_baby); - */ - continue; - } - switch(proc->death_action) { - case Die: - kill_all_children(); - clean_up_sockets(); - sleep(2); - exit(0); - case NadaDelShitsky: - break; - case DoItAgain: - spawn_of_hell(proc->command, DoItAgain); - break; - case CleanHypertexSocket: - clean_hypertex_socket(); - break; - } - } -} - -@ -\subsection{main} -The main procedure should return an [[int]]. We change the return value -here and in [[src/include/sman.H1]]. -<>= - return(0); -@ -<
>= -int -main(int argc, char *argv[],char *envp[]) -{ - if (tpd == 1) fprintf(stderr,"sman:main entered\n"); - bsdSignal(SIGINT, SIG_IGN,RestartSystemCalls); - process_options(argc, argv); - - init_term_io(); - init_spad_process_list(); - start_the_Axiom(envp); - if (open_server(SessionIOName) == -2) { - fprintf(stderr, "Fatal error opening I/O socket\n"); - clean_up_sockets(); - exit(-1); - } - start_the_session_manager(); - if (start_spadclient) start_the_spadclient(); - if (start_local_spadclient) start_the_local_spadclient(); - if (start_nagman) start_the_nagman(); - if (start_ht) start_the_hypertex(); - if (start_graphics) start_the_graphics(); - sleep(1); - - if (fork_you(Die) != NULL) { - sman_catch_signals(); - monitor_children(); - exit(0); - } - manage_spad_io(ptcNum); - if (tpd == 1) fprintf(stderr,"sman:main exit\n"); -<> -} - -@ -\subsection{sman} -<>= -#define _SMAN_C - -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<> -<
> - -@ -\section{License} -<>= -/* -Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd. -All rights reserved. - -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions are -met: - - - Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - - - Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in - the documentation and/or other materials provided with the - distribution. - - - Neither the name of The Numerical ALgorithms Group Ltd. nor the - names of its contributors may be used to endorse or promote products - derived from this software without specific prior written permission. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS -IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED -TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A -PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER -OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, -EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, -PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR -PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF -LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING -NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS -SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -*/ - -@ -<<*>>= -<> -<> -@ -\eject -\begin{thebibliography}{99} -\bibitem{1} nothing -\end{thebibliography} -\end{document} diff --git a/src/sman/sman.h b/src/sman/sman.h new file mode 100644 index 00000000..262b62d9 --- /dev/null +++ b/src/sman/sman.h @@ -0,0 +1,54 @@ +/* + Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd. + All rights reserved. + + Copyright (C) 2007, Gabriel Dos Reis. + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are + met: + + - Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + + - Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in + the documentation and/or other materials provided with the + distribution. + + - Neither the name of The Numerical ALgorithms Group Ltd. nor the + names of its contributors may be used to endorse or promote products + derived from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS + IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER + OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +/* Process control definitions. Used by fork_you and spawn_of_hell */ + +/* When a process dies it kills off everything else */ +#define Die 1 +/* When a process dies, do nothing */ +#define NadaDelShitsky 2 +/* When a process dies start it up again */ +#define DoItAgain 3 +/* When hypertex dies, clean its socket */ +#define CleanHypertexSocket 4 + +typedef struct spad_proc { + int proc_id; /* process id of child */ + int death_action; /* one of the above constants */ + char *command; /* sh command line to restart the process */ + struct spad_proc *next; +} SpadProcess; + -- cgit v1.2.3