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- #if !defined(lint) && !defined(LINT)
- static char rcsid[] = "$Header: env.c,v 2.2 90/07/18 00:23:48 vixie Exp $";
- #endif
-
- /* Copyright 1988,1990 by Paul Vixie
- * All rights reserved
- *
- * Distribute freely, except: don't remove my name from the source or
- * documentation (don't take credit for my work), mark your changes (don't
- * get me blamed for your possible bugs), don't alter or remove this
- * notice. May be sold if buildable source is provided to buyer. No
- * warrantee of any kind, express or implied, is included with this
- * software; use at your own risk, responsibility for damages (if any) to
- * anyone resulting from the use of this software rests entirely with the
- * user.
- *
- * Send bug reports, bug fixes, enhancements, requests, flames, etc., and
- * I'll try to keep a version up to date. I can be reached as follows:
- * Paul Vixie, 329 Noe Street, San Francisco, CA, 94114, (415) 864-7013,
- * paul@vixie.sf.ca.us || {hoptoad,pacbell,decwrl,crash}!vixie!paul
- */
-
-
- #include "cron.h"
-
-
- char **
- env_init()
- {
- extern char *malloc();
- register char **p = (char **) malloc(sizeof(char **));
-
- p[0] = NULL;
- return p;
- }
-
-
- char **
- env_set(envp, envstr)
- char **envp;
- char *envstr;
- {
- extern char *realloc(), *savestr();
- register int count, found;
- register char **p;
-
- /*
- * count the number of elements, including the null pointer;
- * also set 'found' to -1 or index of entry if already in here.
- */
- found = -1;
- for (count = 0; envp[count] != NULL; count++)
- {
- if (!strcmp_until(envp[count], envstr, '='))
- found = count;
- }
- count++; /* for the null pointer
- */
-
- if (found != -1)
- {
- /*
- * it exists already, so just free the existing setting,
- * save our new one there, and return the existing array.
- */
- free(envp[found]);
- envp[found] = savestr(envstr);
- return envp;
- }
-
- /*
- * it doesn't exist yet, so resize the array, move null pointer over
- * one, save our string over the old null pointer, and return resized
- * array.
- */
- p = (char **) realloc(
- (char *) envp,
- (unsigned) ((count+1) * sizeof(char **))
- );
- p[count] = p[count-1];
- p[count-1] = savestr(envstr);
- return p;
- }
-
-
- int
- load_env(envstr, f)
- char *envstr;
- FILE *f;
- {
- /* return ERR = end of file
- * FALSE = not an env setting (file was repositioned)
- * TRUE = was an env setting
- */
- char *strcpy(), *sprintf();
- long filepos;
- int fileline;
- char name[MAX_TEMPSTR], val[MAX_ENVSTR];
- int fields, strdtb();
- void skip_comments();
-
- filepos = ftell(f);
- fileline = LineNumber;
- skip_comments(f);
- if (EOF == get_string(envstr, MAX_ENVSTR, f, "\n"))
- return ERR;
-
- Debug(DPARS, ("load_env, read <%s>\n", envstr))
-
- name[0] = val[0] = '\0';
- fields = sscanf(envstr, "%[^ =] = %[^\n#]", name, val);
- if (fields != 2)
- {
- Debug(DPARS, ("load_env, not 2 fields (%d)\n", fields))
- fseek(f, filepos, 0);
- Set_LineNum(fileline);
- return FALSE;
- }
-
- /* 2 fields from scanf; looks like an env setting
- */
-
- /*
- * process value string
- */
- {
- int len = strdtb(val);
-
- if (len >= 2)
- if (val[0] == '\'' || val[0] == '"')
- if (val[len-1] == val[0])
- {
- val[len-1] = '\0';
- (void) strcpy(val, val+1);
- }
- }
-
- (void) sprintf(envstr, "%s=%s", name, val);
- Debug(DPARS, ("load_env, <%s> <%s> -> <%s>\n", name, val, envstr))
- return TRUE;
- }
-
-
- char *
- env_get(name, envp)
- char *name;
- char **envp;
- {
- char *index();
-
- for (; *envp; envp++)
- if (!strcmp_until(*envp, name, '='))
- return index(*envp, '=') + 1;
- return NULL;
- }
-