/* $Xorg: saveutil.c,v 1.5 2001/02/09 02:06:01 xorgcvs Exp $ */ /****************************************************************************** Copyright 1993, 1998 The Open Group Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Except as contained in this notice, the name of The Open Group shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from The Open Group. ******************************************************************************/ /* $XFree86: xc/programs/xsm/saveutil.c,v 1.5 2001/01/17 23:46:31 dawes Exp $ */ #include "xsm.h" #include "log.h" #include "saveutil.h" #include "info.h" static char session_save_file[PATH_MAX]; void set_session_save_file_name(const char *session_name) { const char *p; p = getenv ("SM_SAVE_DIR"); if (!p) { p = getenv ("HOME"); if (!p) p = "."; } snprintf (session_save_file, sizeof(session_save_file), "%s/.XSM-%s", p, session_name); } int ReadSave(const char *session_name, char **sm_id) { char *buf; int buflen; char *p; PendingClient *c = NULL; Prop *prop = NULL; PropValue *val; FILE *f; int state, i; int version_number; f = fopen(session_save_file, "r"); if(!f) { if (verbose) printf("No session save file.\n"); *sm_id = NULL; return 0; } if (verbose) printf("Reading session save file...\n"); buf = NULL; buflen = 0; /* Read version # */ getnextline(&buf, &buflen, f); if((p = strchr(buf, '\n'))) *p = '\0'; version_number = atoi (buf); if (version_number > SAVEFILE_VERSION) { if (verbose) printf("Unsupported version number of session save file.\n"); *sm_id = NULL; if (buf) free (buf); return 0; } /* Read SM's id */ getnextline(&buf, &buflen, f); if((p = strchr(buf, '\n'))) *p = '\0'; *sm_id = XtNewString(buf); /* Read number of clients running in the last session */ if (version_number >= 2) { getnextline(&buf, &buflen, f); if((p = strchr(buf, '\n'))) *p = '\0'; num_clients_in_last_session = atoi (buf); } state = 0; while(getnextline(&buf, &buflen, f)) { if((p = strchr(buf, '\n'))) *p = '\0'; for(p = buf; *p && isspace(*p); p++) /* LOOP */; if(*p == '#') continue; if(!*p) { if (version_number >= 3 && ListCount (PendingList) == num_clients_in_last_session) { state = 5; break; } else { state = 0; continue; } } if(!isspace(buf[0])) { switch(state) { case 0: c = (PendingClient *)XtMalloc(sizeof *c); if(!c) nomem(); c->clientId = XtNewString(p); c->clientHostname = NULL; /* set in next state */ c->props = ListInit(); if(!c->props) nomem(); if(!ListAddLast(PendingList, (char *)c)) nomem(); state = 1; break; case 1: c->clientHostname = XtNewString(p); state = 2; break; case 2: case 4: prop = (Prop *)XtMalloc(sizeof *prop); if(!prop) nomem(); prop->name = XtNewString(p); prop->values = ListInit(); if(!prop->values) nomem(); prop->type = NULL; if(!ListAddLast(c->props, (char *)prop)) nomem(); state = 3; break; case 3: prop->type = XtNewString(p); state = 4; break; default: fprintf(stderr, "state %d\n", state); fprintf(stderr, "Corrupt save file line ignored:\n%s\n", buf); continue; } } else { if (state != 4) { fprintf(stderr, "Corrupt save file line ignored:\n%s\n", buf); continue; } val = (PropValue *)XtMalloc(sizeof *val); if(!val) nomem(); if (strcmp (prop->type, SmCARD8) == 0) { val->length = 1; val->value = (XtPointer) XtMalloc (1); *((char *)(val->value)) = atoi (p); } else { val->length = strlen(p); val->value = XtNewString(p); } if(!ListAddLast(prop->values, (char *)val)) nomem(); } } /* Read commands for non-session aware clients */ if (state == 5) { String strbuf; int bufsize = 0; getnextline(&buf, &buflen, f); if((p = strchr(buf, '\n'))) *p = '\0'; non_session_aware_count = atoi (buf); if (non_session_aware_count > 0) { non_session_aware_clients = (char **) malloc ( non_session_aware_count * sizeof (char *)); for (i = 0; i < non_session_aware_count; i++) { getnextline(&buf, &buflen, f); if((p = strchr(buf, '\n'))) *p = '\0'; non_session_aware_clients[i] = (char *) malloc ( strlen (buf) + 2); strcpy (non_session_aware_clients[i], buf); bufsize += (strlen (buf) + 1); } strbuf = (String) malloc (bufsize + 1); strbuf[0] = '\0'; for (i = 0; i < non_session_aware_count; i++) { strcat (strbuf, non_session_aware_clients[i]); strcat (strbuf, "\n"); } XtVaSetValues (manualRestartCommands, XtNstring, strbuf, NULL); free ((char *) strbuf); } } fclose(f); if (buf) free (buf); return 1; } static void SaveClient(FILE *f, ClientRec *client) { List *pl; fprintf (f, "%s\n", client->clientId); fprintf (f, "%s\n", client->clientHostname); for (pl = ListFirst (client->props); pl; pl = ListNext (pl)) { Prop *pprop = (Prop *) pl->thing; List *pj, *vl; PropValue *pval; fprintf (f, "%s\n", pprop->name); fprintf (f, "%s\n", pprop->type); if (strcmp (pprop->type, SmCARD8) == 0) { char *card8; int value; vl = ListFirst (pprop->values); pval = (PropValue *) vl->thing; card8 = pval->value; value = *card8; fprintf(f, "\t%d\n", value); } else { for (pj = ListFirst (pprop->values); pj; pj = ListNext (pj)) { pval = (PropValue *) pj->thing; fprintf (f, "\t%s\n", (char *)pval->value); } } } fprintf (f, "\n"); } void WriteSave(const char *sm_id) { ClientRec *client; FILE *f; List *cl; String commands; char *p, *c; int count; f = fopen (session_save_file, "w"); if (!f) { char msg[256]; snprintf (msg, sizeof(msg), "%s: Error creating session save file %s", Argv[0], session_save_file); add_log_text (msg); perror (msg); } else { fprintf (f, "%d\n", SAVEFILE_VERSION); fprintf (f, "%s\n", sm_id); count = 0; for (cl = ListFirst (RunningList); cl; cl = ListNext (cl)) { client = (ClientRec *) cl->thing; if (client->restartHint != SmRestartNever) count++; } count += ListCount (RestartAnywayList); fprintf (f, "%d\n", count); if (count == 0) fprintf (f, "\n"); for (cl = ListFirst (RunningList); cl; cl = ListNext (cl)) { client = (ClientRec *) cl->thing; if (client->restartHint == SmRestartNever) continue; SaveClient (f, client); } for (cl = ListFirst (RestartAnywayList); cl; cl = ListNext (cl)) { client = (ClientRec *) cl->thing; SaveClient (f, client); } /* Save the non-session aware clients */ XtVaGetValues (manualRestartCommands, XtNstring, &commands, NULL); p = c = commands; count = 0; while (*p) { if (*p == '\n') { if (p != c) count++; c = p + 1; } p++; } if (p != c) count++; fprintf (f, "%d\n", count); p = c = commands; while (*p) { if (*p == '\n') { if (p != c) { *p = '\0'; fprintf (f, "%s\n", c); *p = '\n'; } c = p + 1; } p++; } if (p != c) fprintf (f, "%s\n", c); fclose (f); } } Status DeleteSession(const char *session_name) { char *buf; int buflen; char *p; const char *dir; FILE *f; int state; int foundDiscard; char filename[256]; int version_number; dir = getenv ("SM_SAVE_DIR"); if (!dir) { dir = getenv ("HOME"); if (!dir) dir = "."; } snprintf (filename, sizeof(filename), "%s/.XSM-%s", dir, session_name); f = fopen(filename, "r"); if(!f) { return (0); } buf = NULL; buflen = 0; /* Read version # */ getnextline(&buf, &buflen, f); if((p = strchr(buf, '\n'))) *p = '\0'; version_number = atoi (buf); if (version_number > SAVEFILE_VERSION) { if (verbose) printf("Can't delete session save file - incompatible version.\n"); if (buf) free (buf); return (0); } /* Skip SM's id */ getnextline(&buf, &buflen, f); /* Skip number of clients running in the last session */ if (version_number >= 2) getnextline(&buf, &buflen, f); state = 0; foundDiscard = 0; while(getnextline(&buf, &buflen, f)) { if((p = strchr(buf, '\n'))) *p = '\0'; for(p = buf; *p && isspace(*p); p++) /* LOOP */; if(*p == '#') continue; if(!*p) { state = 0; foundDiscard = 0; continue; } if(!isspace(buf[0])) { switch(state) { case 0: state = 1; break; case 1: state = 2; break; case 2: case 4: if (strcmp (p, SmDiscardCommand) == 0) foundDiscard = 1; state = 3; break; case 3: state = 4; break; default: continue; } } else { if (state != 4) { continue; } if (foundDiscard) { execute_system_command (p); /* Discard Command */ foundDiscard = 0; } } } fclose(f); if (buf) free (buf); return ((remove (filename) == -1) ? 0 : 1); } Bool getnextline(char **pbuf, int *plen, FILE *f) { int c; int i; i = 0; while(1) { if(i+2 > *plen) { if(*plen) *plen *= 2; else *plen = BUFSIZ; if(*pbuf) *pbuf = (char *) realloc(*pbuf, *plen + 1); else *pbuf = (char *) malloc(*plen + 1); } c = getc(f); if(c == EOF) break; (*pbuf)[i++] = c; if(c == '\n') break; } (*pbuf)[i] = '\0'; return i; }