webcit/subst.c

   1 /*
   2  * $Id$
   3  *
   4  * Variable substitution type stuff
   5  *
   6  */
   7
   8
   9
  10 #include <ctype.h>
  11 #include <stdlib.h>
  12 #include <unistd.h>
  13 #include <stdio.h>
  14 #include <fcntl.h>
  15 #include <signal.h>
  16 #include <sys/types.h>
  17 #include <sys/wait.h>
  18 #include <sys/socket.h>
  19 #include <sys/time.h>
  20 #include <sys/stat.h>
  21 #include <limits.h>
  22 #include <netinet/in.h>
  23 #include <netdb.h>
  24 #include <string.h>
  25 #include <pwd.h>
  26 #include <errno.h>
  27 #include <stdarg.h>
  28 #include <pthread.h>
  29 #include <signal.h>
  30 #include "webcit.h"
  31
  32 struct wcsubst *global_subst = NULL;
  33
  34
  35 /*
  36  * Clear out the list of substitution variables local to this session
  37  */
  38 void clear_local_substs(void) {
  39         struct wcsubst *ptr;
  40
  41         while (WC->vars != NULL) {
  42                 ptr = WC->vars->next;
  43
  44                 if ((WC->vars->wcs_type == WCS_STRING)
  45                    || (WC->vars->wcs_type == WCS_SERVCMD)) {
  46                         free(WC->vars->wcs_value);
  47                 }
  48
  49                 free(WC->vars);
  50                 WC->vars = ptr;
  51         }
  52 }
  53
  54
  55 /*
  56  * Add a substitution variable (local to this session)
  57  */
  58 void svprintf(char *keyname, int keytype, const char *format,...)
  59 {
  60         va_list arg_ptr;
  61         char wbuf[1024];
  62         struct wcsubst *ptr;
  63
  64         va_start(arg_ptr, format);
  65         vsprintf(wbuf, format, arg_ptr);
  66         va_end(arg_ptr);
  67
  68         ptr = (struct wcsubst *) malloc(sizeof(struct wcsubst));
  69         ptr->next = WC->vars;
  70         ptr->wcs_type = keytype;
  71         strcpy(ptr->wcs_key, keyname);
  72         ptr->wcs_value = malloc(strlen(wbuf)+1);
  73         strcpy(ptr->wcs_value, wbuf);
  74         WC->vars = ptr;
  75 }
  76
  77
  78
  79 /*
  80  * back end for print_value_of() ... does a server command
  81  */
  82 void pvo_do_cmd(char *servcmd) {
  83         char buf[256];
  84
  85         serv_puts(servcmd);
  86         serv_gets(buf);
  87
  88         switch(buf[0]) {
  89                 case '2':
  90                 case '3':
  91                 case '5':
  92                         wprintf("%s\n", &buf[4]);
  93                         break;
  94                 case '1':
  95                         fmout(NULL);
  96                         break;
  97                 case '4':
  98                         wprintf("%s\n", &buf[4]);
  99                         serv_puts("000");
 100                         break;
 101         }
 102 }
 103
 104
 105
 106 /*
 107  * Print the value of a variable
 108  */
 109 void print_value_of(char *keyname) {
 110         struct wcsubst *ptr;
 111
 112         for (ptr = WC->vars; ptr != NULL; ptr = ptr->next) {
 113                 if (!strcasecmp(ptr->wcs_key, keyname)) {
 114                         if (ptr->wcs_type == WCS_STRING) {
 115                                 wprintf("%s", ptr->wcs_value);
 116                         }
 117                         else if (ptr->wcs_type == WCS_SERVCMD) {
 118                                 pvo_do_cmd(ptr->wcs_value);
 119                         }
 120                 }
 121         }
 122 }
 123
 124
 125
 126 /*
 127  * Display a variable-substituted template
 128  */
 129 void do_template(void *templatename) {
 130         char filename[PATH_MAX];
 131         FILE *fp;
 132         char inbuf[1024];
 133         char outbuf[sizeof inbuf];
 134         char key[sizeof inbuf];
 135         int i, j, pos;
 136         int olen;
 137
 138         strcpy(filename, "static/");
 139         strcat(filename, templatename);
 140
 141         fp = fopen(filename, "r");
 142         if (fp == NULL) {
 143                 wprintf("<BLINK>ERROR</BLINK> - could not open template ");
 144                 wprintf("'%s' - %s<BR>\n",
 145                         templatename, strerror(errno));
 146                 return;
 147         }
 148
 149         strcpy(inbuf, "");
 150
 151         while (fgets(inbuf, sizeof inbuf, fp) != NULL) {
 152                 strcpy(outbuf, "");
 153                 olen = 0;
 154
 155                 for (i=0; i<strlen(inbuf); ++i) {
 156                         if (strncmp(&inbuf[i], "<?", 2)) {
 157                                 outbuf[olen] = inbuf[i];
 158                                 outbuf[++olen] = 0;
 159                         }
 160                         else {
 161                                 pos = (-1);
 162                                 for (j=strlen(inbuf); j>=i;  --j)  {
 163                                         if (inbuf[j]=='>') pos = j;
 164                                 }
 165                                 if (pos > 0) {
 166                                         wprintf("%s", outbuf);
 167                                         strcpy(outbuf, "");
 168                                         olen = 0;
 169                                         strncpy(key, &inbuf[i+2], pos-i-2);
 170                                         print_value_of(key);
 171                                         i = pos;
 172                                 }
 173                                 else {
 174                                         i = i + 2;
 175                                 }
 176                         }
 177                 }
 178                 wprintf("%s", outbuf);
 179         }
 180
 181         fclose(fp);
 182 }