| 1 | #if !defined(lint) && !defined(LINT) |
| 2 | static char rcsid[] = "$Header: env.c,v 2.2 90/07/18 00:23:48 vixie Exp $"; |
| 3 | #endif |
| 4 | |
| 5 | /* Copyright 1988,1990 by Paul Vixie |
| 6 | * All rights reserved |
| 7 | * |
| 8 | * Distribute freely, except: don't remove my name from the source or |
| 9 | * documentation (don't take credit for my work), mark your changes (don't |
| 10 | * get me blamed for your possible bugs), don't alter or remove this |
| 11 | * notice. May be sold if buildable source is provided to buyer. No |
| 12 | * warrantee of any kind, express or implied, is included with this |
| 13 | * software; use at your own risk, responsibility for damages (if any) to |
| 14 | * anyone resulting from the use of this software rests entirely with the |
| 15 | * user. |
| 16 | * |
| 17 | * Send bug reports, bug fixes, enhancements, requests, flames, etc., and |
| 18 | * I'll try to keep a version up to date. I can be reached as follows: |
| 19 | * Paul Vixie, 329 Noe Street, San Francisco, CA, 94114, (415) 864-7013, |
| 20 | * paul@vixie.sf.ca.us || {hoptoad,pacbell,decwrl,crash}!vixie!paul |
| 21 | * |
| 22 | * PATCHES MAGIC LEVEL PATCH THAT GOT US HERE |
| 23 | * -------------------- ----- ---------------------- |
| 24 | * CURRENT PATCH LEVEL: 1 00131 |
| 25 | * -------------------- ----- ---------------------- |
| 26 | * |
| 27 | * 06 Apr 93 Adam Glass Fixes so it compiles quitely |
| 28 | * |
| 29 | */ |
| 30 | |
| 31 | |
| 32 | #include "cron.h" |
| 33 | |
| 34 | |
| 35 | char ** |
| 36 | env_init() |
| 37 | { |
| 38 | extern char *malloc(); |
| 39 | register char **p = (char **) malloc(sizeof(char **)); |
| 40 | |
| 41 | p[0] = NULL; |
| 42 | return p; |
| 43 | } |
| 44 | |
| 45 | |
| 46 | char ** |
| 47 | env_set(envp, envstr) |
| 48 | char **envp; |
| 49 | char *envstr; |
| 50 | { |
| 51 | extern char *realloc(), *savestr(); |
| 52 | register int count, found; |
| 53 | register char **p; |
| 54 | |
| 55 | /* |
| 56 | * count the number of elements, including the null pointer; |
| 57 | * also set 'found' to -1 or index of entry if already in here. |
| 58 | */ |
| 59 | found = -1; |
| 60 | for (count = 0; envp[count] != NULL; count++) |
| 61 | { |
| 62 | if (!strcmp_until(envp[count], envstr, '=')) |
| 63 | found = count; |
| 64 | } |
| 65 | count++; /* for the null pointer |
| 66 | */ |
| 67 | |
| 68 | if (found != -1) |
| 69 | { |
| 70 | /* |
| 71 | * it exists already, so just free the existing setting, |
| 72 | * save our new one there, and return the existing array. |
| 73 | */ |
| 74 | free(envp[found]); |
| 75 | envp[found] = savestr(envstr); |
| 76 | return envp; |
| 77 | } |
| 78 | |
| 79 | /* |
| 80 | * it doesn't exist yet, so resize the array, move null pointer over |
| 81 | * one, save our string over the old null pointer, and return resized |
| 82 | * array. |
| 83 | */ |
| 84 | p = (char **) realloc( |
| 85 | (char *) envp, |
| 86 | (unsigned) ((count+1) * sizeof(char **)) |
| 87 | ); |
| 88 | p[count] = p[count-1]; |
| 89 | p[count-1] = savestr(envstr); |
| 90 | return p; |
| 91 | } |
| 92 | |
| 93 | |
| 94 | int |
| 95 | load_env(envstr, f) |
| 96 | char *envstr; |
| 97 | FILE *f; |
| 98 | { |
| 99 | /* return ERR = end of file |
| 100 | * FALSE = not an env setting (file was repositioned) |
| 101 | * TRUE = was an env setting |
| 102 | */ |
| 103 | long filepos; |
| 104 | int fileline; |
| 105 | char name[MAX_TEMPSTR], val[MAX_ENVSTR]; |
| 106 | int fields, strdtb(); |
| 107 | void skip_comments(); |
| 108 | |
| 109 | filepos = ftell(f); |
| 110 | fileline = LineNumber; |
| 111 | skip_comments(f); |
| 112 | if (EOF == get_string(envstr, MAX_ENVSTR, f, "\n")) |
| 113 | return ERR; |
| 114 | |
| 115 | Debug(DPARS, ("load_env, read <%s>\n", envstr)) |
| 116 | |
| 117 | name[0] = val[0] = '\0'; |
| 118 | fields = sscanf(envstr, "%[^ =] = %[^\n#]", name, val); |
| 119 | if (fields != 2) |
| 120 | { |
| 121 | Debug(DPARS, ("load_env, not 2 fields (%d)\n", fields)) |
| 122 | fseek(f, filepos, 0); |
| 123 | Set_LineNum(fileline); |
| 124 | return FALSE; |
| 125 | } |
| 126 | |
| 127 | /* 2 fields from scanf; looks like an env setting |
| 128 | */ |
| 129 | |
| 130 | /* |
| 131 | * process value string |
| 132 | */ |
| 133 | { |
| 134 | int len = strdtb(val); |
| 135 | |
| 136 | if (len >= 2) |
| 137 | if (val[0] == '\'' || val[0] == '"') |
| 138 | if (val[len-1] == val[0]) |
| 139 | { |
| 140 | val[len-1] = '\0'; |
| 141 | (void) strcpy(val, val+1); |
| 142 | } |
| 143 | } |
| 144 | |
| 145 | (void) sprintf(envstr, "%s=%s", name, val); |
| 146 | Debug(DPARS, ("load_env, <%s> <%s> -> <%s>\n", name, val, envstr)) |
| 147 | return TRUE; |
| 148 | } |
| 149 | |
| 150 | |
| 151 | char * |
| 152 | env_get(name, envp) |
| 153 | char *name; |
| 154 | char **envp; |
| 155 | { |
| 156 | char *index(); |
| 157 | |
| 158 | for (; *envp; envp++) |
| 159 | if (!strcmp_until(*envp, name, '=')) |
| 160 | return index(*envp, '=') + 1; |
| 161 | return NULL; |
| 162 | } |