Commit | Line | Data |
---|---|---|
f8beb284 MW |
1 | /*$Id: checktag.c,v 1.4 1999/10/12 23:38:36 lindberg Exp $*/ |
2 | /*$Name: ezmlm-idx-040 $*/ | |
3 | #include "stralloc.h" | |
4 | #include "scan.h" | |
5 | #include "fmt.h" | |
6 | #include "cookie.h" | |
7 | #include "makehash.h" | |
8 | #include "strerr.h" | |
9 | #include "errtxt.h" | |
10 | #include "subscribe.h" | |
11 | ||
12 | static stralloc key = {0}; | |
13 | static stralloc line = {0}; | |
14 | static stralloc quoted = {0}; | |
15 | static char strnum[FMT_ULONG]; | |
16 | static char newcookie[COOKIE]; | |
17 | ||
18 | char *checktag (dir,num,listno,action,seed,hash) | |
19 | /* reads dir/sql. If not present, checks that the hash of seed matches */ | |
20 | /* hash and returns success (NULL). If not match returns "". If error, */ | |
21 | /* returns error string */ | |
22 | ||
23 | char *dir; /* the db base dir */ | |
24 | unsigned long num; /* message number */ | |
25 | unsigned long listno; /* bottom of range => slave */ | |
26 | char *action; | |
27 | char *seed; /* cookie base */ | |
28 | char *hash; /* cookie */ | |
29 | { | |
30 | ||
31 | if (!seed) return (char *) 0; /* no data - accept */ | |
32 | ||
33 | strnum[fmt_ulong(strnum,num)] = '\0'; /* message nr ->string*/ | |
34 | ||
35 | switch(slurp("key",&key,32)) { | |
36 | case -1: | |
37 | return ERR_READ_KEY; | |
38 | case 0: | |
39 | return ERR_NOEXIST_KEY; | |
40 | } | |
41 | ||
42 | cookie(newcookie,key.s,key.len,strnum,seed,action); | |
43 | if (byte_diff(hash,COOKIE,newcookie)) return ""; | |
44 | else return (char *) 0; | |
45 | ||
46 | } |