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ssiLink.h File Reference

Go to the source code of this file.

Functions

BOOLEAN ssiOpen (si_link l, short flag, leftv u)
 
BOOLEAN ssiWrite (si_link l, leftv v)
 
leftv ssiRead1 (si_link l)
 
leftv ssiRead2 (si_link l, leftv key)
 
BOOLEAN ssiClose (si_link l)
 
const char * slStatusSsi (si_link l, const char *request)
 
si_link_extension slInitSsiExtension (si_link_extension s)
 
si_link ssiCommandLink ()
 
void sig_chld_hdl (int sig)
 additional default signal handler
 
int ssiReservePort (int clients)
 

Function Documentation

◆ sig_chld_hdl()

void sig_chld_hdl ( int sig)

additional default signal handler

some newer Linux version cannot have SIG_IGN for SIGCHLD, so use this nice routine here: SuSe 9.x reports -1 always Redhat 9.x/FC x reports sometimes -1 see also: hpux_system also needed by getrusage (timer etc.)

Parameters
[in]sig

Definition at line 2315 of file ssiLink.cc.

2316{
2317 pid_t kidpid;
2318 int status;
2319
2320 loop
2321 {
2322 kidpid = si_waitpid(-1, &status, WNOHANG);
2323 if (kidpid==-1)
2324 {
2325 /* continue on interruption (EINTR): */
2326 if (errno == EINTR) continue;
2327 /* break on anything else (EINVAL or ECHILD according to manpage): */
2328 break;
2329 }
2330 else if (kidpid==0) break; /* no more children to process, so break */
2331
2332 //printf("Child %ld terminated\n", kidpid);
2334 while((hh!=NULL)&&(ssiToBeClosed_inactive))
2335 {
2336 if((hh->l!=NULL) && (hh->l->m->Open==ssiOpen))
2337 {
2338 ssiInfo *d = (ssiInfo *)hh->l->data;
2339 if(d->pid==kidpid)
2340 {
2342 {
2344 slClose(hh->l);
2346 break;
2347 }
2348 else break;
2349 }
2350 else hh=(link_list)hh->next;
2351 }
2352 else hh=(link_list)hh->next;
2353 }
2354 }
2355}
#define TRUE
Definition auxiliary.h:100
#define FALSE
Definition auxiliary.h:96
#define NULL
Definition omList.c:12
int * status
Definition si_signals.h:61
#define loop
Definition structs.h:75

◆ slInitSsiExtension()

si_link_extension slInitSsiExtension ( si_link_extension s)

Definition at line 1875 of file ssiLink.cc.

1876{
1877 s->Open=ssiOpen;
1878 s->Close=ssiClose;
1879 s->Kill=ssiClose;
1880 s->Read=ssiRead1;
1881 s->Read2=(slRead2Proc)NULL;
1882 s->Write=ssiWrite;
1883 s->Dump=ssiDump;
1884 s->GetDump=ssiGetDump;
1885
1886 s->Status=slStatusSsi;
1887 s->SetRing=ssiSetRing;
1888 s->type="ssi";
1889 return s;
1890}
const CanonicalForm int s
Definition facAbsFact.cc:51

◆ slStatusSsi()

const char * slStatusSsi ( si_link l,
const char * request )

Definition at line 1892 of file ssiLink.cc.

1893{
1894 ssiInfo *d=(ssiInfo*)l->data;
1895 if (d==NULL) return "not open";
1896 if (((strcmp(l->mode,"fork")==0)
1897 ||(strcmp(l->mode,"tcp")==0)
1898 ||(strcmp(l->mode,"connect")==0))
1899 && (strcmp(request, "read") == 0))
1900 {
1901 if (s_isready(d->f_read)) return "ready";
1902#if defined(HAVE_POLL)
1903 pollfd pfd;
1904 loop
1905 {
1906 /* Don't block. Return socket status immediately. */
1907 pfd.fd=d->fd_read;
1908 pfd.events=POLLIN;
1909 //Print("test fd %d\n",d->fd_read);
1910 /* check with select: chars waiting: no -> not ready */
1911 switch (si_poll(&pfd,1,0))
1912 {
1913 case 0: /* not ready */ return "not ready";
1914 case -1: /*error*/ return "error";
1915 case 1: /*ready ? */ break;
1916 }
1917#else
1918 fd_set mask;
1919 struct timeval wt;
1920 if (FD_SETSIZE<=d->fd_read)
1921 {
1922 Werror("file descriptor number too high (%d)",d->fd_read);
1923 return "error";
1924 }
1925
1926 loop
1927 {
1928 /* Don't block. Return socket status immediately. */
1929 wt.tv_sec = 0;
1930 wt.tv_usec = 0;
1931
1932 FD_ZERO(&mask);
1933 FD_SET(d->fd_read, &mask);
1934 //Print("test fd %d\n",d->fd_read);
1935 /* check with select: chars waiting: no -> not ready */
1936 switch (si_select(d->fd_read+1, &mask, NULL, NULL, &wt))
1937 {
1938 case 0: /* not ready */ return "not ready";
1939 case -1: /*error*/ return "error";
1940 case 1: /*ready ? */ break;
1941 }
1942#endif
1943 /* yes: read 1 char*/
1944 /* if \n, check again with select else ungetc(c), ready*/
1945 int c=s_getc(d->f_read);
1946 //Print("try c=%d\n",c);
1947 if (c== -1) return "eof"; /* eof or error */
1948 else if (isdigit(c))
1949 { s_ungetc(c,d->f_read); return "ready"; }
1950 else if (c>' ')
1951 {
1952 Werror("unknown char in ssiLink(%d)",c);
1953 return "error";
1954 }
1955 /* else: next char */
1956 }
1957 }
1958 else if (strcmp(request, "read") == 0)
1959 {
1960 if (SI_LINK_R_OPEN_P(l) && (!s_iseof(d->f_read)) && (s_isready(d->f_read))) return "ready";
1961 else return "not ready";
1962 }
1963 else if (strcmp(request, "write") == 0)
1964 {
1965 if (SI_LINK_W_OPEN_P(l)) return "ready";
1966 else return "not ready";
1967 }
1968 else return "unknown status request";
1969}
int l
Definition cfEzgcd.cc:100
void Werror(const char *fmt,...)
Definition reporter.cc:189
int s_getc(s_buff F)
Definition s_buff.cc:58
int s_isready(s_buff F)
Definition s_buff.cc:85
int s_iseof(s_buff F)
Definition s_buff.cc:254
void s_ungetc(int c, s_buff F)
Definition s_buff.cc:99

◆ ssiClose()

BOOLEAN ssiClose ( si_link l)

Definition at line 1429 of file ssiLink.cc.

1430{
1431 if (l!=NULL)
1432 {
1434 ssiInfo *d = (ssiInfo *)l->data;
1435 if (d!=NULL)
1436 {
1437 // send quit signal
1438 if ((d->send_quit_at_exit)
1439 && (d->quit_sent==0))
1440 {
1441 fputs("99\n",d->f_write);
1442 fflush(d->f_write);
1443 d->quit_sent=1;
1444 }
1445 // clean ring
1446 if (d->r!=NULL) rKill(d->r);
1447 for(int i=0;i<SI_RING_CACHE;i++)
1448 {
1449 if (d->rings[i]!=NULL) rKill(d->rings[i]);
1450 d->rings[i]=NULL;
1451 }
1452 if (d->f_read!=NULL) { s_close(d->f_read);d->f_read=NULL;}
1453 if (d->f_write!=NULL) { fclose(d->f_write); d->f_write=NULL; }
1454 if ((strcmp(l->mode,"tcp")==0)
1455 || (strcmp(l->mode,"fork")==0))
1456 {
1457 // did the child stop ?
1458 int pid=si_waitpid(d->pid,NULL,WNOHANG);
1459 if ((pid==0) /* ono staus change for child*/
1460 && (kill(d->pid,0)==0)) // child is still running
1461 {
1462 struct timespec t;
1463 struct timespec rem;
1464 // wait 5 sec
1465 for(int i=0;i<50;i++)
1466 {
1467 // wait till signal or 100ms:
1468 t.tv_sec=0;
1469 t.tv_nsec=100000000; // <=100 ms
1470 nanosleep(&t, &rem);
1471 // child finished ?
1472 if (si_waitpid(d->pid,NULL,WNOHANG) != 0) break;
1473 }
1474 if (kill(d->pid,0)==0) // child still exists
1475 {
1476 kill(d->pid,SIGTERM);
1477 // wait another 5 sec
1478 for(int i=0;i<50;i++)
1479 {
1480 // wait till signal or 100ms:
1481 t.tv_sec=0;
1482 t.tv_nsec=100000000; // <=100 ms
1483 nanosleep(&t, &rem);
1484 // child finished ?
1485 if (si_waitpid(d->pid,NULL,WNOHANG) != 0) break;
1486 }
1487 kill(d->pid,SIGKILL);
1488 }
1489 }
1490 }
1491 if ((strcmp(l->mode,"tcp")==0)
1492 || (strcmp(l->mode,"fork")==0))
1493 {
1495 if (hh!=NULL)
1496 {
1497 if (hh->l==l)
1498 {
1500 omFreeSize(hh,sizeof(link_struct));
1501 }
1502 else while(hh->next!=NULL)
1503 {
1504 link_list hhh=(link_list)hh->next;
1505 if (hhh->l==l)
1506 {
1507 hh->next=hhh->next;
1508 omFreeSize(hhh,sizeof(link_struct));
1509 break;
1510 }
1511 else
1512 hh=(link_list)hh->next;
1513 }
1514 }
1515 }
1516 omFreeSize((ADDRESS)d,(sizeof *d));
1517 }
1518 l->data=NULL;
1519 }
1520 return FALSE;
1521}
void * ADDRESS
Definition auxiliary.h:119
int i
Definition cfEzgcd.cc:132
void rKill(ring r)
Definition ipshell.cc:6162
void rem(unsigned long *a, unsigned long *q, unsigned long p, int &dega, int degq)
Definition minpoly.cc:572
#define omFreeSize(addr, size)
int s_close(s_buff &F)
Definition s_buff.cc:45
#define SI_RING_CACHE
Definition s_buff.h:30

◆ ssiCommandLink()

si_link ssiCommandLink ( )

Definition at line 2244 of file ssiLink.cc.

2245{
2246 if (ssiReserved_P==0)
2247 {
2248 WerrorS("ERROR no reserved port requested");
2249 return NULL;
2250 }
2251 struct sockaddr_in cli_addr;
2252 int clilen = sizeof(cli_addr);
2253 int newsockfd = si_accept(ssiReserved_sockfd, (struct sockaddr *) &cli_addr, (socklen_t *)&clilen);
2254 if(newsockfd < 0)
2255 {
2256 Werror("ERROR on accept (errno=%d)",errno);
2257 return NULL;
2258 }
2260 si_link_extension s = si_link_root;
2261 si_link_extension prev = s;
2262 while (strcmp(s->type, "ssi") != 0)
2263 {
2264 if (s->next == NULL)
2265 {
2266 prev = s;
2267 s = NULL;
2268 break;
2269 }
2270 else
2271 {
2272 s = s->next;
2273 }
2274 }
2275 if (s != NULL)
2276 l->m = s;
2277 else
2278 {
2279 si_link_extension ns = (si_link_extension)omAlloc0Bin(s_si_link_extension_bin);
2280 prev->next=slInitSsiExtension(ns);
2281 l->m = prev->next;
2282 }
2283 l->name=omStrDup("");
2284 l->mode=omStrDup("tcp");
2285 l->ref=1;
2286 ssiInfo *d=(ssiInfo*)omAlloc0(sizeof(ssiInfo));
2287 l->data=d;
2288 d->fd_read = newsockfd;
2289 d->fd_write = newsockfd;
2290 d->f_read = s_open(newsockfd);
2291 d->f_write = fdopen(newsockfd, "w");
2294 if (ssiReserved_Clients<=0)
2295 {
2296 ssiReserved_P=0;
2297 si_close(ssiReserved_sockfd);
2298 }
2299 return l;
2300}
void WerrorS(const char *s)
Definition feFopen.cc:24
#define omStrDup(s)
#define omAlloc0Bin(bin)
#define omAlloc0(size)
s_buff s_open(int fd)
Definition s_buff.cc:31
int fd_write
Definition s_buff.h:26
s_buff f_read
Definition s_buff.h:22
FILE * f_write
Definition s_buff.h:23
int fd_read
Definition s_buff.h:26

◆ ssiOpen()

BOOLEAN ssiOpen ( si_link l,
short flag,
leftv u )

Definition at line 998 of file ssiLink.cc.

999{
1000 if (l!=NULL)
1001 {
1002 const char *mode;
1003 ssiInfo *d=(ssiInfo*)omAlloc0(sizeof(ssiInfo));
1004 if (flag & SI_LINK_OPEN)
1005 {
1006 if (l->mode[0] != '\0' && (strcmp(l->mode, "r") == 0))
1007 flag = SI_LINK_READ;
1008 else flag = SI_LINK_WRITE;
1009 }
1010
1011 if (flag == SI_LINK_READ) mode = "r";
1012 else if (strcmp(l->mode, "w") == 0) mode = "w";
1013 else if (strcmp(l->mode, "fork") == 0) mode = "fork";
1014 else if (strcmp(l->mode, "tcp") == 0) mode = "tcp";
1015 else if (strcmp(l->mode, "connect") == 0) mode = "connect";
1016 else mode = "a";
1017
1018
1019 SI_LINK_SET_OPEN_P(l, flag);
1020 if(l->data!=NULL) omFreeSize(l->data,sizeof(ssiInfo));
1021 l->data=d;
1022 omFreeBinAddr(l->mode);
1023 l->mode = omStrDup(mode);
1024
1025 if (l->name[0] == '\0')
1026 {
1027 if (strcmp(mode,"fork")==0)
1028 {
1029 int pc[2];
1030 int cp[2];
1031 int err1=pipe(pc);
1032 int err2=pipe(cp);
1033 if (err1 || err2)
1034 {
1035 Werror("pipe failed with %d\n",errno);
1036 return TRUE;
1037 }
1039 n->u=u;
1040 n->l=l;
1041 n->next=(void *)ssiToBeClosed;
1042 ssiToBeClosed=n;
1043
1044 pid_t pid = fork();
1045 if (pid == -1 && errno == EAGAIN) // RLIMIT_NPROC too low?
1046 {
1048 pid = fork();
1049 }
1050 if (pid == -1)
1051 {
1052 WerrorS("could not fork");
1053 }
1054 if (pid==0) /*fork: child*/
1055 {
1056 /* block SIGINT */
1057 sigset_t sigint;
1058 sigemptyset(&sigint);
1059 sigaddset(&sigint, SIGINT);
1060 sigprocmask(SIG_BLOCK, &sigint, NULL);
1061 /* set #cpu to 1 for the child:*/
1062 feSetOptValue(FE_OPT_CPUS,1);
1063
1065 /* we know: l is the first entry in ssiToBeClosed-list */
1066 while(hh!=NULL)
1067 {
1068 SI_LINK_SET_CLOSE_P(hh->l);
1069 ssiInfo *dd=(ssiInfo*)hh->l->data;
1070 s_close(dd->f_read);
1071 fclose(dd->f_write);
1072 if (dd->r!=NULL) rKill(dd->r);
1073 omFreeSize((ADDRESS)dd,(sizeof *dd));
1074 hh->l->data=NULL;
1075 link_list nn=(link_list)hh->next;
1076 omFree(hh);
1077 hh=nn;
1078 }
1079 ssiToBeClosed->next=NULL;
1080#ifdef HAVE_SIMPLEIPC
1081 memset(sem_acquired, 0, SIPC_MAX_SEMAPHORES*sizeof(sem_acquired[0]));
1082#endif // HAVE_SIMPLEIPC
1083 si_close(pc[1]); si_close(cp[0]);
1084 d->f_write=fdopen(cp[1],"w");
1085 d->f_read=s_open(pc[0]);
1086 d->fd_read=pc[0];
1087 d->fd_write=cp[1];
1088 //d->r=currRing;
1089 //if (d->r!=NULL) d->r->ref++;
1090 l->data=d;
1091 omFreeBinAddr(l->mode);
1092 l->mode = omStrDup(mode);
1095 //myynest=0;
1097 if ((u!=NULL)&&(u->rtyp==IDHDL))
1098 {
1099 idhdl h=(idhdl)u->data;
1100 h->lev=0;
1101 }
1102 loop
1103 {
1104 if (!SI_LINK_OPEN_P(l)) m2_end(0);
1105 if(d->f_read->is_eof) m2_end(0);
1106 leftv h=ssiRead1(l); /*contains an exit.... */
1107 if (feErrors != NULL && *feErrors != '\0')
1108 {
1109 // handle errors:
1110 PrintS(feErrors); /* currently quite simple */
1111 *feErrors = '\0';
1112 }
1113 ssiWrite(l,h);
1114 h->CleanUp();
1116 }
1117 /* never reached*/
1118 }
1119 else if (pid>0) /*fork: parent*/
1120 {
1121 d->pid=pid;
1122 si_close(pc[0]); si_close(cp[1]);
1123 d->f_write=fdopen(pc[1],"w");
1124 d->f_read=s_open(cp[0]);
1125 d->fd_read=cp[0];
1126 d->fd_write=pc[1];
1128 d->send_quit_at_exit=1;
1129 //d->r=currRing;
1130 //if (d->r!=NULL) d->r->ref++;
1131 }
1132 else
1133 {
1134 Werror("fork failed (%d)",errno);
1135 l->data=NULL;
1136 omFree(d);
1137 return TRUE;
1138 }
1139 }
1140 // ---------------------------------------------------------------------
1141 else if (strcmp(mode,"tcp")==0)
1142 {
1143 int sockfd, newsockfd, portno, clilen;
1144 struct sockaddr_in serv_addr, cli_addr;
1145 sockfd = socket(AF_INET, SOCK_STREAM, 0);
1146 if(sockfd < 0)
1147 {
1148 WerrorS("ERROR opening socket");
1149 l->data=NULL;
1150 l->flags=0;
1151 omFree(d);
1152 return TRUE;
1153 }
1154 memset((char *) &serv_addr,0, sizeof(serv_addr));
1155 portno = 1025;
1156 serv_addr.sin_family = AF_INET;
1157 serv_addr.sin_addr.s_addr = INADDR_ANY;
1158 do
1159 {
1160 portno++;
1161 serv_addr.sin_port = htons(portno);
1162 if(portno > 50000)
1163 {
1164 WerrorS("ERROR on binding (no free port available?)");
1165 l->data=NULL;
1166 l->flags=0;
1167 omFree(d);
1168 return TRUE;
1169 }
1170 }
1171 while(bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0);
1172 Print("waiting on port %d\n", portno);mflush();
1173 listen(sockfd,1);
1174 newsockfd = si_accept(sockfd, (struct sockaddr *) &cli_addr, (socklen_t *)&clilen);
1175 if(newsockfd < 0)
1176 {
1177 WerrorS("ERROR on accept");
1178 l->data=NULL;
1179 l->flags=0;
1180 omFree(d);
1181 return TRUE;
1182 }
1183 PrintS("client accepted\n");
1184 d->fd_read = newsockfd;
1185 d->fd_write = newsockfd;
1186 d->f_read = s_open(newsockfd);
1187 d->f_write = fdopen(newsockfd, "w");
1189 si_close(sockfd);
1190 }
1191 // no ssi-Link on stdin or stdout
1192 else
1193 {
1194 Werror("invalid mode >>%s<< for ssi",mode);
1195 l->data=NULL;
1196 l->flags=0;
1197 omFree(d);
1198 return TRUE;
1199 }
1200 }
1201 // =========================================================================
1202 else /*now l->name!=NULL*/
1203 {
1204 // tcp mode
1205 if(strcmp(mode,"tcp")==0)
1206 {
1207 int sockfd, newsockfd, portno, clilen;
1208 struct sockaddr_in serv_addr, cli_addr;
1209 sockfd = socket(AF_INET, SOCK_STREAM, 0);
1210 if(sockfd < 0)
1211 {
1212 WerrorS("ERROR opening socket");
1213 l->data=NULL;
1214 l->flags=0;
1215 omFree(d);
1216 return TRUE;
1217 }
1218 memset((char *) &serv_addr,0, sizeof(serv_addr));
1219 portno = 1025;
1220 serv_addr.sin_family = AF_INET;
1221 serv_addr.sin_addr.s_addr = INADDR_ANY;
1222 do
1223 {
1224 portno++;
1225 serv_addr.sin_port = htons(portno);
1226 if(portno > 50000)
1227 {
1228 WerrorS("ERROR on binding (no free port available?)");
1229 l->data=NULL;
1230 l->flags=0;
1231 return TRUE;
1232 }
1233 }
1234 while(bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0);
1235 //Print("waiting on port %d\n", portno);mflush();
1236 listen(sockfd,1);
1237 char* cli_host = (char*)omAlloc(256);
1238 char* path = (char*)omAlloc(1024);
1239 int r = si_sscanf(l->name,"%255[^:]:%s",cli_host,path);
1240 if(r == 0)
1241 {
1242 WerrorS("ERROR: no host specified");
1243 l->data=NULL;
1244 l->flags=0;
1245 omFree(d);
1246 omFree(path);
1247 omFree(cli_host);
1248 return TRUE;
1249 }
1250 else if(r == 1)
1251 {
1252 WarnS("program not specified, using /usr/local/bin/Singular");
1253 Warn("in line >>%s<<",my_yylinebuf);
1254 strcpy(path,"/usr/local/bin/Singular");
1255 }
1256 char* ssh_command = (char*)omAlloc(256);
1257 char* ser_host = (char*)omAlloc(64);
1258 if(strcmp(cli_host,"localhost")==0)
1259 strcpy(ser_host,"localhost");
1260 else
1261 gethostname(ser_host,64);
1262 if (strcmp(cli_host,"localhost")==0) /*avoid "ssh localhost" as key may change*/
1263 snprintf(ssh_command,256,"%s -q --batch --link=ssi --MPhost=%s --MPport=%d &",path,ser_host,portno);
1264 else
1265 snprintf(ssh_command,256,"ssh %s %s -q --batch --link=ssi --MPhost=%s --MPport=%d &",cli_host,path,ser_host,portno);
1266 //Print("client on %s started:%s\n",cli_host,path);
1267 omFree(path);
1268 omFree(cli_host);
1269 if (TEST_OPT_PROT) { Print("running >>%s<<\n",ssh_command); }
1270 int re=system(ssh_command);
1271 if (re<0)
1272 {
1273 Werror("ERROR running `%s` (%d)",ssh_command,re);
1274 l->data=NULL;
1275 l->flags=0;
1276 omFree(d);
1277 return TRUE;
1278 }
1279 omFree(ssh_command);
1280 omFree(ser_host);
1281 clilen = sizeof(cli_addr);
1282 newsockfd = si_accept(sockfd, (struct sockaddr *) &cli_addr, (socklen_t *)&clilen);
1283 if(newsockfd < 0)
1284 {
1285 WerrorS("ERROR on accept");
1286 l->data=NULL;
1287 l->flags=0;
1288 omFree(d);
1289 return TRUE;
1290 }
1291 //PrintS("client accepted\n");
1292 d->fd_read = newsockfd;
1293 d->fd_write = newsockfd;
1294 d->f_read = s_open(newsockfd);
1295 d->f_write = fdopen(newsockfd, "w");
1296 si_close(sockfd);
1298 d->send_quit_at_exit=1;
1299 link_list newlink=(link_list)omAlloc(sizeof(link_struct));
1300 newlink->u=u;
1301 newlink->l=l;
1302 newlink->next=(void *)ssiToBeClosed;
1303 ssiToBeClosed=newlink;
1304 fprintf(d->f_write,"98 %d %d %u %u\n",SSI_VERSION,MAX_TOK,si_opt_1,si_opt_2);
1305 }
1306 // ----------------------------------------------------------------------
1307 else if(strcmp(mode,"connect")==0)
1308 {
1309 char* host = (char*)omAlloc(256);
1310 int sockfd, portno;
1311 struct sockaddr_in serv_addr;
1312 struct hostent *server;
1313
1314 si_sscanf(l->name,"%255[^:]:%d",host,&portno);
1315 //Print("connect to host %s, port %d\n",host,portno);mflush();
1316 if (portno!=0)
1317 {
1318 sockfd = socket(AF_INET, SOCK_STREAM, 0);
1319 if (sockfd < 0)
1320 {
1321 WerrorS("ERROR opening socket");
1322 l->flags=0;
1323 return TRUE;
1324 }
1325 server = gethostbyname(host);
1326 if (server == NULL)
1327 {
1328 WerrorS("ERROR, no such host");
1329 l->flags=0;
1330 return TRUE;
1331 }
1332 memset((char *) &serv_addr, 0, sizeof(serv_addr));
1333 serv_addr.sin_family = AF_INET;
1334 memcpy((char *)&serv_addr.sin_addr.s_addr,
1335 (char *)server->h_addr,
1336 server->h_length);
1337 serv_addr.sin_port = htons(portno);
1338 if (si_connect(sockfd,(sockaddr*)&serv_addr,sizeof(serv_addr)) < 0)
1339 {
1340 Werror("ERROR connecting(errno=%d)",errno);
1341 l->flags=0;
1342 return TRUE;
1343 }
1344 //PrintS("connected\n");mflush();
1345 d->f_read=s_open(sockfd);
1346 d->fd_read=sockfd;
1347 d->f_write=fdopen(sockfd,"w");
1348 d->fd_write=sockfd;
1350 omFree(host);
1351 }
1352 else
1353 {
1354 l->data=NULL;
1355 l->flags=0;
1356 omFree(d);
1357 return TRUE;
1358 }
1359 }
1360 // ======================================================================
1361 else
1362 {
1363 // normal link to a file
1364 if (FE_OPT_NO_SHELL_FLAG) {WerrorS("no links allowed");return TRUE;}
1365 FILE *outfile;
1366 char *filename=l->name;
1367
1368 if(filename[0]=='>')
1369 {
1370 if (filename[1]=='>')
1371 {
1372 filename+=2;
1373 mode = "a";
1374 }
1375 else
1376 {
1377 filename++;
1378 mode="w";
1379 }
1380 }
1381 outfile=myfopen(filename,mode);
1382 if (outfile!=NULL)
1383 {
1384 if (strcmp(l->mode,"r")==0)
1385 {
1386 fclose(outfile);
1387 d->f_read=s_open_by_name(filename);
1388 }
1389 else
1390 {
1391 d->f_write = outfile;
1392 fprintf(d->f_write,"98 %d %d %u %u\n",SSI_VERSION,MAX_TOK,si_opt_1,si_opt_2);
1393 }
1394 }
1395 else
1396 {
1397 omFree(d);
1398 l->data=NULL;
1399 l->flags=0;
1400 return TRUE;
1401 }
1402 }
1403 }
1404 }
1405
1406 return FALSE;
1407}
int rtyp
Definition subexpr.h:91
void * data
Definition subexpr.h:88
VAR BOOLEAN singular_in_batchmode
Definition cntrlc.cc:62
#define Print
Definition emacs.cc:80
#define Warn
Definition emacs.cc:77
#define WarnS
Definition emacs.cc:78
EXTERN_VAR BOOLEAN FE_OPT_NO_SHELL_FLAG
Definition extra.cc:169
FILE * myfopen(const char *path, const char *mode)
Definition feFopen.cc:167
const char * feSetOptValue(feOptIndex opt, char *optarg)
Definition feOpt.cc:154
VAR char my_yylinebuf[80]
Definition febase.cc:44
char * fe_fgets_dummy(const char *, char *, int)
Definition feread.cc:455
char *(* fe_fgets_stdin)(const char *pr, char *s, int size)
Definition feread.cc:32
EXTERN_VAR omBin sleftv_bin
Definition ipid.h:145
STATIC_VAR Poly * h
Definition janet.cc:971
void m2_end(int i)
Definition misc_ip.cc:1102
#define omAlloc(size)
#define omFree(addr)
#define omFreeBin(addr, bin)
#define omFreeBinAddr(addr)
VAR unsigned si_opt_2
Definition options.c:6
VAR unsigned si_opt_1
Definition options.c:5
#define TEST_OPT_PROT
Definition options.h:105
void PrintS(const char *s)
Definition reporter.cc:284
VAR char * feErrors
Definition reporter.cc:47
#define mflush()
Definition reporter.h:58
idrec * idhdl
Definition ring.h:21
int raise_rlimit_nproc()
Definition rlimit.c:18
s_buff s_open_by_name(const char *n)
Definition s_buff.cc:39
pid_t pid
Definition s_buff.h:25
char send_quit_at_exit
Definition s_buff.h:28
VAR int sem_acquired[SIPC_MAX_SEMAPHORES]
Definition semaphore.c:25
#define SIPC_MAX_SEMAPHORES
Definition simpleipc.h:10
sleftv * leftv
Definition structs.h:57
#define IDHDL
Definition tok.h:31
@ MAX_TOK
Definition tok.h:220

◆ ssiRead1()

leftv ssiRead1 ( si_link l)

Definition at line 1524 of file ssiLink.cc.

1525{
1526 ssiInfo *d = (ssiInfo *)l->data;
1528 int t=0;
1529 t=s_readint(d->f_read);
1530 //Print("got type %d\n",t);
1531 switch(t)
1532 {
1533 case 1:res->rtyp=INT_CMD;
1534 res->data=(char *)(long)ssiReadInt(d->f_read);
1535 //Print("int: %d\n",(int)(long)res->data);
1536 break;
1537 case 2:res->rtyp=STRING_CMD;
1538 res->data=(char *)ssiReadString(d);
1539 //Print("str: %s\n",(char*)res->data);
1540 break;
1541 case 3:res->rtyp=NUMBER_CMD;
1542 if (d->r==NULL) goto no_ring;
1543 ssiCheckCurrRing(d->r);
1544 res->data=(char *)ssiReadNumber(d);
1545 //Print("number\n");
1546 break;
1547 case 4:res->rtyp=BIGINT_CMD;
1548 res->data=(char *)ssiReadBigInt(d);
1549 //Print("bigint\n");
1550 break;
1551 case 15:
1552 case 5:{
1553 //Print("ring %d\n",t);
1554 d->r=ssiReadRing(d);
1555 if (errorreported) return NULL;
1556 res->data=(char*)d->r;
1557 if (d->r!=NULL) rIncRefCnt(d->r);
1558 res->rtyp=RING_CMD;
1559 if (t==15) // setring
1560 {
1561 if(ssiSetCurrRing(d->r)) { d->r=currRing; }
1563 return ssiRead1(l);
1564 }
1565 }
1566 break;
1567 case 6:res->rtyp=POLY_CMD;
1568 //Print("poly\n");
1569 if (d->r==NULL) goto no_ring;
1570 ssiCheckCurrRing(d->r);
1571 res->data=(char*)ssiReadPoly(d);
1572 break;
1573 case 7:res->rtyp=IDEAL_CMD;
1574 //Print("ideal\n");
1575 if (d->r==NULL) goto no_ring;
1576 ssiCheckCurrRing(d->r);
1577 res->data=(char*)ssiReadIdeal(d);
1578 break;
1579 case 8:res->rtyp=MATRIX_CMD;
1580 //Print("matrix\n");
1581 if (d->r==NULL) goto no_ring;
1582 ssiCheckCurrRing(d->r);
1583 res->data=(char*)ssiReadMatrix(d);
1584 break;
1585 case 9:res->rtyp=VECTOR_CMD;
1586 //Print("vector\n");
1587 if (d->r==NULL) goto no_ring;
1588 ssiCheckCurrRing(d->r);
1589 res->data=(char*)ssiReadPoly(d);
1590 break;
1591 case 10:
1592 case 22:if (t==22) res->rtyp=SMATRIX_CMD;
1593 else res->rtyp=MODUL_CMD;
1594 //Print("module/smatrix %d\n",t);
1595 if (d->r==NULL) goto no_ring;
1596 ssiCheckCurrRing(d->r);
1597 {
1598 int rk=s_readint(d->f_read);
1599 ideal M=ssiReadIdeal(d);
1600 M->rank=rk;
1601 res->data=(char*)M;
1602 }
1603 break;
1604 case 11:
1605 {
1606 //Print("cmd\n",t);
1607 res->rtyp=COMMAND;
1608 res->data=ssiReadCommand(l);
1609 int nok=res->Eval();
1610 if (nok) WerrorS("error in eval");
1611 break;
1612 }
1613 case 12: /*DEF_CMD*/
1614 {
1615 //Print("def\n",t);
1616 res->rtyp=0;
1617 res->name=(char *)ssiReadString(d);
1618 int nok=res->Eval();
1619 if (nok) WerrorS("error in name lookup");
1620 break;
1621 }
1622 case 13: res->rtyp=PROC_CMD;
1623 res->data=ssiReadProc(d);
1624 break;
1625 case 14: res->rtyp=LIST_CMD;
1626 res->data=ssiReadList(l);
1627 break;
1628 case 16: res->rtyp=NONE; res->data=NULL;
1629 break;
1630 case 17: res->rtyp=INTVEC_CMD;
1631 res->data=ssiReadIntvec(d);
1632 break;
1633 case 18: res->rtyp=INTMAT_CMD;
1634 res->data=ssiReadIntmat(d);
1635 break;
1636 case 19: res->rtyp=BIGINTMAT_CMD;
1637 res->data=ssiReadBigintmat(d);
1638 break;
1639 case 20: ssiReadBlackbox(res,l);
1640 break;
1641 case 21: ssiReadAttrib(res,l);
1642 break;
1643 case 23: ssiReadRingProperties(l);
1644 return ssiRead1(l);
1645 break;
1646 case 24: res->rtyp=BIGINTVEC_CMD;
1647 res->data=ssiReadBigintvec(d);
1648 break;
1649 // ------------
1650 case 98: // version
1651 {
1652 int n98_v,n98_m;
1653 BITSET n98_o1,n98_o2;
1654 n98_v=s_readint(d->f_read);
1655 n98_m=s_readint(d->f_read);
1656 n98_o1=s_readint(d->f_read);
1657 n98_o2=s_readint(d->f_read);
1658 if ((n98_v!=SSI_VERSION) ||(n98_m!=MAX_TOK))
1659 {
1660 Print("incompatible versions of ssi: %d/%d vs %d/%d\n",
1661 SSI_VERSION,MAX_TOK,n98_v,n98_m);
1662 }
1663 #ifndef SING_NDEBUG
1664 if (TEST_OPT_DEBUG)
1665 Print("// opening ssi-%d, MAX_TOK=%d\n",n98_v,n98_m);
1666 #endif
1667 si_opt_1=n98_o1;
1668 si_opt_2=n98_o2;
1670 return ssiRead1(l);
1671 }
1672 case 99: omFreeBin(res,sleftv_bin); ssiClose(l); m2_end(0);
1673 break; /*to make compiler happy*/
1674 case 0: if (s_iseof(d->f_read))
1675 {
1676 ssiClose(l);
1677 }
1678 res->rtyp=DEF_CMD;
1679 break;
1680 default: Werror("not implemented (t:%d)",t);
1682 res=NULL;
1683 break;
1684 }
1685 // if currRing is required for the result, but lost
1686 // define "ssiRing%d" as currRing:
1687 if ((d->r!=NULL)
1688 && (currRing!=d->r)
1689 && (res->RingDependend()))
1690 {
1691 if(ssiSetCurrRing(d->r)) { d->r=currRing; }
1692 }
1693 return res;
1694no_ring: WerrorS("no ring");
1696 return NULL;
1697}
CanonicalForm res
Definition facAbsFact.cc:60
VAR short errorreported
Definition feFopen.cc:23
@ IDEAL_CMD
Definition grammar.cc:285
@ MATRIX_CMD
Definition grammar.cc:287
@ BIGINTMAT_CMD
Definition grammar.cc:278
@ PROC_CMD
Definition grammar.cc:281
@ INTMAT_CMD
Definition grammar.cc:280
@ MODUL_CMD
Definition grammar.cc:288
@ SMATRIX_CMD
Definition grammar.cc:292
@ VECTOR_CMD
Definition grammar.cc:293
@ BIGINTVEC_CMD
Definition grammar.cc:279
@ NUMBER_CMD
Definition grammar.cc:289
@ POLY_CMD
Definition grammar.cc:290
@ RING_CMD
Definition grammar.cc:282
#define TEST_OPT_DEBUG
Definition options.h:110
VAR ring currRing
Widely used global variable which specifies the current polynomial ring for Singular interpreter and ...
Definition polys.cc:13
static ring rIncRefCnt(ring r)
Definition ring.h:846
int s_readint(s_buff F)
Definition s_buff.cc:112
#define M
Definition sirandom.c:25
#define BITSET
Definition structs.h:16
@ BIGINT_CMD
Definition tok.h:38
@ LIST_CMD
Definition tok.h:118
@ INTVEC_CMD
Definition tok.h:101
@ DEF_CMD
Definition tok.h:58
@ STRING_CMD
Definition tok.h:187
@ INT_CMD
Definition tok.h:96
#define NONE
Definition tok.h:223
#define COMMAND
Definition tok.h:29

◆ ssiRead2()

leftv ssiRead2 ( si_link l,
leftv key )

◆ ssiReservePort()

int ssiReservePort ( int clients)

Definition at line 2208 of file ssiLink.cc.

2209{
2210 if (ssiReserved_P!=0)
2211 {
2212 WerrorS("ERROR already a reserved port requested");
2213 return 0;
2214 }
2215 int portno;
2216 ssiReserved_sockfd = socket(AF_INET, SOCK_STREAM, 0);
2217 if(ssiReserved_sockfd < 0)
2218 {
2219 WerrorS("ERROR opening socket");
2220 return 0;
2221 }
2222 memset((char *) &ssiResverd_serv_addr,0, sizeof(ssiResverd_serv_addr));
2223 portno = 1025;
2224 ssiResverd_serv_addr.sin_family = AF_INET;
2225 ssiResverd_serv_addr.sin_addr.s_addr = INADDR_ANY;
2226 do
2227 {
2228 portno++;
2229 ssiResverd_serv_addr.sin_port = htons(portno);
2230 if(portno > 50000)
2231 {
2232 WerrorS("ERROR on binding (no free port available?)");
2233 return 0;
2234 }
2235 }
2236 while(bind(ssiReserved_sockfd, (struct sockaddr *) &ssiResverd_serv_addr, sizeof(ssiResverd_serv_addr)) < 0);
2237 ssiReserved_P=portno;
2238 listen(ssiReserved_sockfd,clients);
2239 ssiReserved_Clients=clients;
2240 return portno;
2241}

◆ ssiWrite()

BOOLEAN ssiWrite ( si_link l,
leftv v )

Definition at line 1718 of file ssiLink.cc.

1719{
1720 if(SI_LINK_W_OPEN_P(l)==0)
1722 ssiInfo *d = (ssiInfo *)l->data;
1723 d->level++;
1724 //FILE *fich=d->f;
1725 while (data!=NULL)
1726 {
1727 int tt=data->Typ();
1728 void *dd=data->Data();
1729 attr *aa=data->Attribute();
1730 if ((aa!=NULL) && ((*aa)!=NULL)) // n user attributes
1731 {
1732 attr a=*aa;
1733 int n=0;
1734 while(a!=NULL) { n++; a=a->next;}
1735 fprintf(d->f_write,"21 %d %d ",data->flag,n);
1736 }
1737 else if (data->flag!=0) // only "flag" attributes
1738 {
1739 fprintf(d->f_write,"21 %d 0 ",data->flag);
1740 }
1741 if ((dd==NULL) && (data->name!=NULL) && (tt==0)) tt=DEF_CMD;
1742 // return pure undefined names as def
1743
1744 switch(tt /*data->Typ()*/)
1745 {
1746 case 0: /*error*/
1747 case NONE/* nothing*/:fputs("16 ",d->f_write);
1748 break;
1749 case STRING_CMD: fputs("2 ",d->f_write);
1750 ssiWriteString(d,(char *)dd);
1751 break;
1752 case INT_CMD: fputs("1 ",d->f_write);
1753 ssiWriteInt(d,(int)(long)dd);
1754 break;
1755 case BIGINT_CMD:fputs("4 ",d->f_write);
1756 ssiWriteBigInt(d,(number)dd);
1757 break;
1758 case NUMBER_CMD:
1759 if (d->r!=currRing)
1760 {
1761 fputs("15 ",d->f_write);
1763 if (d->level<=1) fputc('\n',d->f_write);
1764 }
1765 fputs("3 ",d->f_write);
1766 ssiWriteNumber(d,(number)dd);
1767 break;
1768 case RING_CMD:fputs("5 ",d->f_write);
1769 ssiWriteRing(d,(ring)dd);
1770 break;
1771 case BUCKET_CMD:
1772 {
1774 if (d->r!=sBucketGetRing(b))
1775 {
1776 fputs("15 ",d->f_write);
1778 if (d->level<=1) fputc('\n',d->f_write);
1779 }
1780 fputs("6 ",d->f_write);
1781 ssiWritePoly(d,tt,sBucketPeek(b));
1782 break;
1783 }
1784 case POLY_CMD:
1785 case VECTOR_CMD:
1786 if (d->r!=currRing)
1787 {
1788 fputs("15 ",d->f_write);
1790 if (d->level<=1) fputc('\n',d->f_write);
1791 }
1792 if(tt==POLY_CMD) fputs("6 ",d->f_write);
1793 else fputs("9 ",d->f_write);
1794 ssiWritePoly(d,tt,(poly)dd);
1795 break;
1796 case IDEAL_CMD:
1797 case MODUL_CMD:
1798 case MATRIX_CMD:
1799 case SMATRIX_CMD:
1800 if (d->r!=currRing)
1801 {
1802 fputs("15 ",d->f_write);
1804 if (d->level<=1) fputc('\n',d->f_write);
1805 }
1806 if(tt==IDEAL_CMD) fputs("7 ",d->f_write);
1807 else if(tt==MATRIX_CMD) fputs("8 ",d->f_write);
1808 else /* tt==MODUL_CMD, SMATRIX_CMD*/
1809 {
1810 ideal M=(ideal)dd;
1811 if (tt==MODUL_CMD)
1812 fprintf(d->f_write,"10 %d ",(int)M->rank);
1813 else /*(tt==SMATRIX_CMD)*/
1814 fprintf(d->f_write,"22 %d ",(int)M->rank);
1815 }
1816 ssiWriteIdeal(d,tt,(ideal)dd);
1817 break;
1818 case COMMAND:
1819 fputs("11 ",d->f_write);
1821 break;
1822 case DEF_CMD: /* not evaluated stuff in quotes */
1823 fputs("12 ",d->f_write);
1824 ssiWriteString(d,data->Name());
1825 break;
1826 case PROC_CMD:
1827 fputs("13 ",d->f_write);
1828 ssiWriteProc(d,(procinfov)dd);
1829 break;
1830 case LIST_CMD:
1831 fputs("14 ",d->f_write);
1832 ssiWriteList(l,(lists)dd);
1833 break;
1834 case INTVEC_CMD:
1835 fputs("17 ",d->f_write);
1836 ssiWriteIntvec(d,(intvec *)dd);
1837 break;
1838 case INTMAT_CMD:
1839 fputs("18 ",d->f_write);
1840 ssiWriteIntmat(d,(intvec *)dd);
1841 break;
1842 case BIGINTMAT_CMD:
1843 fputs("19 ",d->f_write);
1845 break;
1846 case BIGINTVEC_CMD:
1847 fputs("24 ",d->f_write);
1849 break;
1850 default:
1851 if (tt>MAX_TOK)
1852 {
1853 blackbox *b=getBlackboxStuff(tt);
1854 fputs("20 ",d->f_write);
1855 b->blackbox_serialize(b,dd,l);
1856 }
1857 else
1858 {
1859 Werror("not implemented (t:%d, rtyp:%d)",tt, data->rtyp);
1860 d->level=0;
1861 return TRUE;
1862 }
1863 break;
1864 }
1865 if (d->level<=1) { fputc('\n',d->f_write); fflush(d->f_write); }
1866 data=data->next;
1867 }
1868 d->level--;
1869 return FALSE;
1870}
sattr * attr
Definition attrib.h:16
blackbox * getBlackboxStuff(const int t)
return the structure to the type given by t
Definition blackbox.cc:17
CanonicalForm b
Definition cfModGcd.cc:4111
Matrices of numbers.
Definition bigintmat.h:51
attr next
Definition attrib.h:26
@ BUCKET_CMD
Definition grammar.cc:284
ip_command * command
Definition ipid.h:23
slists * lists
poly sBucketPeek(sBucket_pt b)
Definition sbuckets.cc:455
ring sBucketGetRing(const sBucket_pt bucket)
Returns bucket ring.
Definition sbuckets.cc:46
sBucket * sBucket_pt
Definition sbuckets.h:16
procinfo * procinfov
Definition structs.h:60