src/libconfig/conf_space.c

   1 #include "compat.h"
   2 #include "libconfig.h"
   3 #include "libconfig_private.h"
   4 #include "conf_space.h"
   5
   6 #ifdef HAVE_STDIO_H
   7 #include <stdio.h>
   8 #endif
   9
  10 #ifdef HAVE_STRING_H
  11 #include <string.h>
  12 #endif
  13
  14 int lc_process_conf_space(const char *appname, const char *configfile) {
  15         LC_FILE *configfp = NULL;
  16         const char *local_lc_errfile;
  17         char linebuf[LC_LINEBUF_LEN] = {0}, *linebuf_ptr = NULL;
  18         char *cmd = NULL, *value = NULL, *sep = NULL;
  19         char *fgetsret = NULL;
  20         int local_lc_errline;
  21         int lcpvret = -1;
  22         int retval = 0;
  23         lc_err_t save_lc_errno = LC_ERR_NONE;
  24
  25         local_lc_errfile = configfile;
  26         local_lc_errline = 0;
  27
  28         if (appname == NULL || configfile == NULL) {
  29                 lc_errfile = local_lc_errfile;
  30                 lc_errline = local_lc_errline;
  31                 lc_errno = LC_ERR_INVDATA;
  32                 return(-1);
  33         }
  34
  35         configfp = lc_fopen(configfile, "r");
  36
  37         if (configfp == NULL) {
  38                 lc_errfile = local_lc_errfile;
  39                 lc_errline = local_lc_errline;
  40                 lc_errno = LC_ERR_CANTOPEN;
  41                 return(-1);
  42         }
  43
  44         while (1) {
  45                 fgetsret = lc_fgets(linebuf, sizeof(linebuf) - 1, configfp);
  46                 if (fgetsret == NULL) {
  47                         break;
  48                 }
  49                 if (lc_feof(configfp)) {
  50                         break;
  51                 }
  52
  53                 local_lc_errline++;
  54
  55                 linebuf_ptr = &linebuf[strlen(linebuf) - 1];
  56                 while (*linebuf_ptr < ' ' && linebuf_ptr >= linebuf) {
  57                         *linebuf_ptr = '\0';
  58                         linebuf_ptr--;
  59                 }
  60
  61                 linebuf_ptr = &linebuf[0];
  62                 while (*linebuf_ptr == ' ') {
  63                         linebuf_ptr++;
  64                 }
  65
  66                 if (*linebuf_ptr == '#' || *linebuf_ptr == '\0') {
  67                         continue;
  68                 }
  69
  70
  71                 sep = strpbrk(linebuf_ptr, " \t");
  72                 cmd = linebuf_ptr;
  73                 if (sep != NULL) {
  74                         *sep = '\0';
  75                         sep++;
  76                         while (*sep == ' ' || *sep == '\t') {
  77                                 sep++;
  78                         }
  79                         value = sep;
  80                 } else {
  81                         value = NULL;
  82                 }
  83
  84                 save_lc_errno = lc_errno;
  85                 lc_errno = LC_ERR_NONE;
  86                 lcpvret = lc_process_var(cmd, NULL, value, LC_FLAGS_VAR);
  87                 if (lcpvret < 0) {
  88                         if (lc_errno == LC_ERR_NONE) {
  89 #ifdef DEBUG
  90                                 fprintf(stderr, "Invalid command: \"%s\"\n", cmd);
  91 #endif
  92                                 lc_errno = LC_ERR_INVCMD;
  93                         } else {
  94 #ifdef DEBUG
  95                                 fprintf(stderr, "Error processing command (command was valid, but an error occured, errno was set)\n");
  96 #endif
  97                         }
  98                         lc_errfile = local_lc_errfile;
  99                         lc_errline = local_lc_errline;
 100                         retval = -1;
 101                 } else {
 102                         lc_errno = save_lc_errno;
 103                 }
 104         }
 105
 106         lc_fclose(configfp);
 107
 108         return(retval);
 109 }