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Added support for HTTP signature pseudo-headers (created) and (expires).

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They are used in Lemmy.
This commit is contained in:
default 2023-01-08 00:26:48 +01:00
parent 9525be7495
commit 315a43a826
1 changed files with 18 additions and 1 deletions
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19
http.c
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@ -109,6 +109,8 @@ int check_signature(snac *snac, char *req)
xs *keyId = NULL; xs *keyId = NULL;
xs *headers = NULL; xs *headers = NULL;
xs *signature = NULL; xs *signature = NULL;
xs *created = NULL;
xs *expires = NULL;
char *pubkey; char *pubkey;
char *p; char *p;
@ -127,6 +129,12 @@ int check_signature(snac *snac, char *req)
else else
if (xs_startswith(v, "signature")) if (xs_startswith(v, "signature"))
signature = xs_crop(xs_dup(v), 11, -1); signature = xs_crop(xs_dup(v), 11, -1);
else
if (xs_startswith(v, "created"))
created = xs_crop(xs_dup(v), 9, -1);
else
if (xs_startswith(v, "expires"))
expires = xs_crop(xs_dup(v), 9, -1);
} }
} }
@ -170,6 +178,14 @@ int check_signature(snac *snac, char *req)
if (strcmp(v, "(request-target)") == 0) { if (strcmp(v, "(request-target)") == 0) {
ss = xs_fmt("%s: post %s", v, xs_dict_get(req, "path")); ss = xs_fmt("%s: post %s", v, xs_dict_get(req, "path"));
} }
else
if (strcmp(v, "(created)") == 0) {
ss = xs_fmt("%s: %s", v, created);
}
else
if (strcmp(v, "(expires)") == 0) {
ss = xs_fmt("%s: %s", v, expires);
}
else { else {
/* add the header */ /* add the header */
if ((hc = xs_dict_get(req, v)) == NULL) { if ((hc = xs_dict_get(req, v)) == NULL) {
@ -187,7 +203,8 @@ int check_signature(snac *snac, char *req)
} }
if (xs_evp_verify(pubkey, sig_str, strlen(sig_str), signature) != 1) { if (xs_evp_verify(pubkey, sig_str, strlen(sig_str), signature) != 1) {
snac_debug(snac, 1, xs_fmt("rsa verify error %s", keyId)); snac_debug(snac, 0, xs_fmt("rsa verify error %s", keyId));
return 0;
} }
return 1; return 1;