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Diffstat (limited to 'src/include/srs2.h')
| -rw-r--r-- | src/include/srs2.h | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/src/include/srs2.h b/src/include/srs2.h new file mode 100644 index 0000000..e993928 --- /dev/null +++ b/src/include/srs2.h @@ -0,0 +1,126 @@ +#ifndef SRS2_H +#define SRS2_H +#include <stdint.h> +#include <time.h> + +/* Adjusted to s/qmail (feh) */ + +/* Copyright (c) 2004 Shevek (srs@anarres.org) + * All rights reserved. + * + * This file is a part of libsrs2 from http://www.libsrs2.org/ + * + * Redistribution and use in source and binary forms, with or without + * modification, under the terms of either the GNU General Public + * License version 2 or the BSD license, at the discretion of the + * user. Copies of these licenses have been included in the libsrs2 + * distribution. See the the file called LICENSE for more + * information. + */ + +/* This is ugly, but reasonably safe. */ +#undef TRUE +#define TRUE 1 +#undef FALSE +#define FALSE 0 + +#define SRSSEP '=' +#define SRS0TAG "SRS0" +#define SRS1TAG "SRS1" + +/* Error codes */ + +#define SRS_ERRTYPE_MASK 0xf000 +#define SRS_ERRTYPE_NONE 0x0000 +#define SRS_ERRTYPE_CONFIG 0x1000 +#define SRS_ERRTYPE_INPUT 0x2000 +#define SRS_ERRTYPE_SYNTAX 0x4000 +#define SRS_ERRTYPE_SRS 0x8000 + +#define SRS_SUCCESS (0) +#define SRS_ENOTSRSADDRESS (1) +#define SRS_ENOTREWRITTEN (2) + +#define SRS_ENOSECRETS (SRS_ERRTYPE_CONFIG | 1) +#define SRS_ESEPARATORINVALID (SRS_ERRTYPE_CONFIG | 2) + +#define SRS_ENOSENDERATSIGN (SRS_ERRTYPE_INPUT | 1) +#define SRS_EBUFTOOSMALL (SRS_ERRTYPE_INPUT | 2) + +#define SRS_ENOSRS0HOST (SRS_ERRTYPE_SYNTAX | 1) +#define SRS_ENOSRS0USER (SRS_ERRTYPE_SYNTAX | 2) +#define SRS_ENOSRS0HASH (SRS_ERRTYPE_SYNTAX | 3) +#define SRS_ENOSRS0STAMP (SRS_ERRTYPE_SYNTAX | 4) +#define SRS_ENOSRS1HOST (SRS_ERRTYPE_SYNTAX | 5) +#define SRS_ENOSRS1USER (SRS_ERRTYPE_SYNTAX | 6) +#define SRS_ENOSRS1HASH (SRS_ERRTYPE_SYNTAX | 7) +#define SRS_EBADTIMESTAMPCHAR (SRS_ERRTYPE_SYNTAX | 8) +#define SRS_EHASHTOOSHORT (SRS_ERRTYPE_SYNTAX | 9) + +#define SRS_ETIMESTAMPOUTOFDATE (SRS_ERRTYPE_SRS | 1) +#define SRS_EHASHINVALID (SRS_ERRTYPE_SRS | 2) + +#define SRS_ERROR_TYPE(x) ((x) & SRS_ERRTYPE_MASK) + +/* SRS implementation */ + +#define SRS_IS_SRS_ADDRESS(x) ( \ + (strncasecmp((x),"SRS",3) == 0) && \ + (strchr("01", (x)[3]) != NULL) && \ + (strchr("-+=", (x)[4]) != NULL) \ +) + +typedef void *(*srs_malloc_t)(size_t); +typedef void *(*srs_realloc_t)(void *,size_t); +typedef void (*srs_free_t)(void *); + +typedef int srs_bool; + +typedef struct _srs_t { + /* Rewriting parameters */ +// stralloc cookies; + char **secrets; + int numsecrets; + char separator; + + /* Security parameters */ + int maxage; /* Maximum allowed age in seconds */ + int hashlen; + int hashmin; + + /* Behaviour parameters */ + srs_bool alwaysrewrite; /* Rewrite even into same domain? */ + srs_bool noforward; /* Never perform forwards rewriting */ + srs_bool noreverse; /* Never perform reverse rewriting */ + char **neverrewrite; /* A list of non-rewritten domains */ +} srs_t; + +/* Interface */ +int srs_set_malloc(srs_malloc_t m,srs_realloc_t r,srs_free_t f); +srs_t *srs_new(); +void srs_init(srs_t *); +void srs_free(srs_t *); +int srs_forward(srs_t *,char *,int,const char *,const char *); +int srs_forward_alloc(srs_t *,char **,const char *,const char *); +int srs_reverse(srs_t *,char *,int, const char *); +int srs_reverse_alloc(srs_t *,char **,const char *); +const char *srs_strerror(int); +int srs_add_secret(srs_t *,const char *); +const char * srs_get_secret(srs_t *,int); + /* You probably shouldn't call these. */ +int srs_timestamp_create(srs_t *,char *,time_t); +int srs_timestamp_check(srs_t *,const char *); + +#define SRS_PARAM_DECLARE(n, t) \ + int srs_set_ ## n (srs_t *srs, t value); \ + t srs_get_ ## n (srs_t *srs); + +SRS_PARAM_DECLARE(alwaysrewrite,srs_bool) +SRS_PARAM_DECLARE(separator,char) +SRS_PARAM_DECLARE(maxage,int) +SRS_PARAM_DECLARE(hashlen,int) +SRS_PARAM_DECLARE(hashmin,int) +SRS_PARAM_DECLARE(noforward,srs_bool) +SRS_PARAM_DECLARE(noreverse,srs_bool) + +#endif /* SRS2_H */ |