2.11BSD#431 - /usr/src/usr.lib/libident/id_parse.c

   1: /*
   2: ** id_parse.c                    Receive and parse a reply from an IDENT server
   3: **
   4: ** Author: Peter Eriksson <pen@lysator.liu.se>
   5: ** Fiddling: Pär Emanuelsson <pell@lysator.liu.se>
   6: */
   7: 
   8: #ifdef NeXT3
   9: #  include <libc.h>
  10: #endif
  11: 
  12: #include <stdio.h>
  13: #include <string.h>
  14: #include <errno.h>
  15: #include <ctype.h>
  16: 
  17: #ifdef HAVE_ANSIHEADERS
  18: #  include <stdlib.h>
  19: #  include <string.h>
  20: #  include <unistd.h>
  21: #endif
  22: 
  23: #include <sys/types.h>
  24: #include <sys/wait.h>
  25: #include <sys/time.h>
  26: 
  27: #ifdef _AIX
  28: #  include <sys/select.h>
  29: #endif
  30: 
  31: #ifdef _AIX
  32: #  include <sys/select.h>
  33: #endif
  34: #ifdef VMS
  35: #  include <sys/socket.h>     /* for fd_set */
  36: #endif
  37: #define IN_LIBIDENT_SRC
  38: #include "ident.h"
  39: 
  40: 
  41: int id_parse __P7(ident_t *, id,
  42:           struct timeval *, timeout,
  43:           int *, lport,
  44:           int *, fport,
  45:           char **, identifier,
  46:           char **, opsys,
  47:           char **, charset)
  48: {
  49:     char c, *cp, *tmp_charset;
  50:     fd_set rs;
  51:     int pos, res=0, lp, fp;
  52: 
  53:     errno = 0;
  54: 
  55:     tmp_charset = 0;
  56: 
  57:     if (!id)
  58:     return -1;
  59:     if (lport)
  60:     *lport = 0;
  61:     if (fport)
  62:     *fport = 0;
  63:     if (identifier)
  64:     *identifier = 0;
  65:     if (opsys)
  66:     *opsys = 0;
  67:     if (charset)
  68:     *charset = 0;
  69: 
  70:     pos = strlen(id->buf);
  71: 
  72:     if (timeout)
  73:     {
  74:     FD_ZERO(&rs);
  75:     FD_SET(id->fd, &rs);
  76: 
  77: #ifdef __hpux
  78:     if ((res = select(FD_SETSIZE, (int *) &rs, (int *)0, (int *)0, timeout)) < 0)
  79: #else
  80:     if ((res = select(FD_SETSIZE, &rs, (fd_set *)0, (fd_set *)0, timeout)) < 0)
  81: #endif
  82:         return -1;
  83: 
  84:     if (res == 0)
  85:     {
  86:         errno = ETIMEDOUT;
  87:         return -1;
  88:     }
  89:     }
  90: 
  91:     /* Every octal value is allowed except 0, \n and \r */
  92:     while (pos < sizeof(id->buf) &&
  93:        (res = read(id->fd, id->buf + pos, 1)) == 1 &&
  94:        id->buf[pos] != '\n' && id->buf[pos] != '\r')
  95:     pos++;
  96: 
  97:     if (res < 0)
  98:     return -1;
  99: 
 100:     if (res == 0)
 101:     {
 102:     errno = ENOTCONN;
 103:     return -1;
 104:     }
 105: 
 106:     if (id->buf[pos] != '\n' && id->buf[pos] != '\r')
 107:     return 0;       /* Not properly terminated string */
 108: 
 109:     id->buf[pos++] = '\0';
 110: 
 111:     /*
 112:     ** Get first field (<lport> , <fport>)
 113:     */
 114:     cp = id_strtok(id->buf, ":", &c);
 115:     if (!cp)
 116:     return -2;
 117: 
 118:     if (sscanf(cp, " %d , %d", &lp, &fp) != 2)
 119:     {
 120:     if (identifier)
 121:     {
 122:         *identifier = id_strdup(cp);
 123:         if (*identifier == NULL)
 124:             return -4;
 125:     }
 126:     return -2;
 127:     }
 128: 
 129:     if (lport)
 130:     *lport = lp;
 131:     if (fport)
 132:     *fport = fp;
 133: 
 134:     /*
 135:     ** Get second field (USERID or ERROR)
 136:     */
 137:     cp = id_strtok((char *)0, ":", &c);
 138:     if (!cp)
 139:     return -2;
 140: 
 141:     if (strcmp(cp, "ERROR") == 0)
 142:     {
 143:     cp = id_strtok((char *)0, "\n\r", &c);
 144:     if (!cp)
 145:         return -2;
 146: 
 147:     if (identifier)
 148:     {
 149:         *identifier = id_strdup(cp);
 150:         if (*identifier == NULL)
 151:             return -4;
 152:     }
 153: 
 154:     return 2;
 155:     }
 156:     else if (strcmp(cp, "USERID") == 0)
 157:     {
 158:     /*
 159: 	** Get first subfield of third field <opsys>
 160: 	*/
 161:     cp = id_strtok((char *) 0, ",:", &c);
 162:     if (!cp)
 163:         return -2;
 164: 
 165:     if (opsys)
 166:     {
 167:         *opsys = id_strdup(cp);
 168:         if (*opsys == NULL)
 169:             return -4;
 170:     }
 171: 
 172:     /*
 173: 	** We have a second subfield (<charset>)
 174: 	*/
 175:     if (c == ',')
 176:     {
 177:         cp = id_strtok((char *)0, ":", &c);
 178:         if (!cp)
 179:         return -2;
 180: 
 181:         tmp_charset = cp;
 182:         if (charset)
 183:         {
 184:         *charset = id_strdup(cp);
 185:         if (*charset == NULL)
 186:             return -4;
 187:         }
 188: 
 189:         /*
 190: 	    ** We have even more subfields - ignore them
 191: 	    */
 192:         if (c == ',')
 193:         id_strtok((char *)0, ":", &c);
 194:     }
 195: 
 196:     if (tmp_charset && strcmp(tmp_charset, "OCTET") == 0)
 197:         cp = id_strtok((char *)0, (char *)0, &c);
 198:     else
 199:         cp = id_strtok((char *)0, "\n\r", &c);
 200: 
 201:     if (identifier)
 202:     {
 203:         *identifier = id_strdup(cp);
 204:         if (*identifier == NULL)
 205:             return -4;
 206:     }
 207:     return 1;
 208:     }
 209:     else
 210:     {
 211:     if (identifier)
 212:     {
 213:         *identifier = id_strdup(cp);
 214:         if (*identifier == NULL)
 215:             return -4;
 216:     }
 217:     return -3;
 218:     }
 219: }

Defined functions

Defined variables

Defined macros