1 /*@ S-nail - a mail user agent derived from Berkeley Mail.
2 *@ URL parsing, credential handling and crypto hooks.
3 *@ .netrc parser quite loosely based upon NetBSD usr.bin/ftp/
4 *@ $NetBSD: ruserpass.c,v 1.33 2007/04/17 05:52:04 lukem Exp $
6 * Copyright (c) 2014 - 2015 Steffen (Daode) Nurpmeso <sdaoden@users.sf.net>.
8 * Permission to use, copy, modify, and/or distribute this software for any
9 * purpose with or without fee is hereby granted, provided that the above
10 * copyright notice and this permission notice appear in all copies.
12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 #define n_FILE urlcrecry
23 #ifndef HAVE_AMALGAMATION
28 /* NetBSD usr.bin/ftp/ruserpass.c uses 100 bytes for that, we need four
29 * concurrently (dummy, host, user, pass), so make it a KB */
30 # define NRC_TOKEN_MAXLEN (1024 / 4)
45 struct nrc_node
*nrc_next
;
46 struct nrc_node
*nrc_result
; /* In match phase, former possible one */
47 ui32_t nrc_mlen
; /* Length of machine name */
48 ui32_t nrc_ulen
; /* Length of user name */
49 ui32_t nrc_plen
; /* Length of password */
50 char nrc_dat
[VFIELD_SIZE(sizeof(ui32_t
))];
52 # define NRC_NODE_ERR ((struct nrc_node*)-1)
54 static struct nrc_node
*_nrc_list
;
55 #endif /* HAVE_NETRC */
57 /* Find the last @ before a slash
58 * TODO Casts off the const but this is ok here; obsolete function! */
59 #ifdef HAVE_SOCKETS /* temporary (we'll have file://..) */
60 static char * _url_last_at_before_slash(char const *sp
);
64 /* Initialize .netrc cache */
65 static void _nrc_init(void);
66 static enum nrc_token
__nrc_token(FILE *fi
, char buffer
[NRC_TOKEN_MAXLEN
],
69 /* We shall lookup a machine in .netrc says ok_blook(netrc_lookup).
70 * only_pass is true then the lookup is for the password only, otherwise we
71 * look for a user (and add password only if we have an exact machine match) */
72 static bool_t
_nrc_lookup(struct url
*urlp
, bool_t only_pass
);
74 /* 0=no match; 1=exact match; -1=wildcard match */
75 static int __nrc_host_match(struct nrc_node
const *nrc
,
76 struct url
const *urlp
);
77 static bool_t
__nrc_find_user(struct url
*urlp
,
78 struct nrc_node
const *nrc
);
79 static bool_t
__nrc_find_pass(struct url
*urlp
, bool_t user_match
,
80 struct nrc_node
const *nrc
);
81 #endif /* HAVE_NETRC */
83 /* The password can also be gained through external agents */
85 static bool_t
_agent_shell_lookup(struct url
*urlp
, char const *comm
);
90 _url_last_at_before_slash(char const *sp
)
96 for (cp
= sp
; (c
= *cp
) != '\0'; ++cp
)
99 while (cp
> sp
&& *--cp
!= '@')
112 char buffer
[NRC_TOKEN_MAXLEN
], host
[NRC_TOKEN_MAXLEN
],
113 user
[NRC_TOKEN_MAXLEN
], pass
[NRC_TOKEN_MAXLEN
], *netrc_load
;
117 bool_t seen_default
, nl_last
;
118 struct nrc_node
*ntail
= NULL
/* CC happy */, *nhead
= NULL
,
122 if ((netrc_load
= file_expand(ok_vlook(NETRC
))) == NULL
)
125 if ((fi
= Fopen(netrc_load
, "r")) == NULL
) {
126 n_err(_("Cannot open \"%s\"\n"), netrc_load
);
130 /* Be simple and apply rigid (permission) check(s) */
131 if (fstat(fileno(fi
), &sb
) == -1 || !S_ISREG(sb
.st_mode
) ||
132 (sb
.st_mode
& (S_IRWXG
| S_IRWXO
))) {
133 n_err(_("Not a regular file, or accessible by non-user: \"%s\"\n"),
141 switch((t
= __nrc_token(fi
, buffer
, &nl_last
))) {
144 default: /* Doesn't happen (but on error?), keep CC happy */
147 /* We ignore the default entry (require an exact host match), and we also
148 * ignore anything after such an entry (faulty syntax) */
153 /* Normalize HOST to lowercase */
155 if (!seen_default
&& (t
= __nrc_token(fi
, host
, &nl_last
)) != NRC_INPUT
)
159 for (cp
= host
; *cp
!= '\0'; ++cp
)
160 *cp
= lowerconv(*cp
);
163 *user
= *pass
= '\0';
164 while ((t
= __nrc_token(fi
, buffer
, &nl_last
)) != NRC_NONE
&&
165 t
!= NRC_MACHINE
&& t
!= NRC_DEFAULT
) {
168 if ((t
= __nrc_token(fi
, user
, &nl_last
)) != NRC_INPUT
)
172 if ((t
= __nrc_token(fi
, pass
, &nl_last
)) != NRC_INPUT
)
176 if ((t
= __nrc_token(fi
, buffer
, &nl_last
)) != NRC_INPUT
)
180 if ((t
= __nrc_token(fi
, buffer
, &nl_last
)) != NRC_INPUT
)
184 while ((c
= getc(fi
)) != EOF
)
185 if (c
== '\n') { /* xxx */
186 /* Don't care about comments here, since we parse until
187 * we've seen two successive newline characters */
201 if (!seen_default
&& (*user
!= '\0' || *pass
!= '\0')) {
202 size_t hl
= strlen(host
), ul
= strlen(user
), pl
= strlen(pass
);
203 struct nrc_node
*nx
= smalloc(sizeof(*nx
) -
204 VFIELD_SIZEOF(struct nrc_node
, nrc_dat
) + hl
+1 + ul
+1 + pl
+1);
207 ntail
->nrc_next
= nx
;
215 memcpy(nx
->nrc_dat
, host
, ++hl
);
216 memcpy(nx
->nrc_dat
+ hl
, user
, ++ul
);
217 memcpy(nx
->nrc_dat
+ hl
+ ul
, pass
, ++pl
);
219 if (t
== NRC_MACHINE
)
221 if (t
== NRC_DEFAULT
)
228 if (options
& OPT_D_V
)
229 n_err(_("Errors occurred while parsing \"%s\"\n"), netrc_load
);
230 assert(nrc
== NRC_NODE_ERR
);
238 if (nrc
== NRC_NODE_ERR
)
239 while (nhead
!= NULL
) {
241 nhead
= nhead
->nrc_next
;
249 static enum nrc_token
250 __nrc_token(FILE *fi
, char buffer
[NRC_TOKEN_MAXLEN
], bool_t
*nl_last
)
262 if (feof(fi
) || ferror(fi
))
265 for (seen_nl
= *nl_last
; (c
= getc(fi
)) != EOF
&& whitechar(c
);)
266 seen_nl
|= (c
== '\n');
270 /* fetchmail and derived parsers support comments */
271 if ((*nl_last
= seen_nl
) && c
== '#') {
272 while ((c
= getc(fi
)) != EOF
&& c
!= '\n')
280 /* Is it a quoted token? At least IBM syntax also supports ' quotes */
281 if (c
== '"' || c
== '\'') {
284 /* Not requiring the closing QM is (Net)BSD syntax */
285 while ((c
= getc(fi
)) != EOF
&& c
!= quotec
) {
286 /* Backslash escaping the next character is (Net)BSD syntax */
288 if ((c
= getc(fi
)) == EOF
)
291 if (PTRCMP(cp
, ==, buffer
+ NRC_TOKEN_MAXLEN
)) {
298 while ((c
= getc(fi
)) != EOF
&& !whitechar(c
)) {
299 /* Backslash escaping the next character is (Net)BSD syntax */
300 if (c
== '\\' && (c
= getc(fi
)) == EOF
)
303 if (PTRCMP(cp
, ==, buffer
+ NRC_TOKEN_MAXLEN
)) {
308 *nl_last
= (c
== '\n');
313 do {/*rv = NRC_NONE*/} while (0);
314 else if (!strcmp(buffer
, "default"))
316 else if (!strcmp(buffer
, "login"))
318 else if (!strcmp(buffer
, "password") || !strcmp(buffer
, "passwd"))
320 else if (!strcmp(buffer
, "account"))
322 else if (!strcmp(buffer
, "macdef"))
324 else if (!strcmp(buffer
, "machine"))
329 if (c
== EOF
&& !feof(fi
))
336 _nrc_lookup(struct url
*urlp
, bool_t only_pass
)
338 struct nrc_node
*nrc
, *nrc_wild
, *nrc_exact
;
342 assert(!only_pass
|| urlp
->url_user
.s
!= NULL
);
343 assert(only_pass
|| urlp
->url_user
.s
== NULL
);
345 if (_nrc_list
== NULL
)
347 if (_nrc_list
== NRC_NODE_ERR
)
350 nrc_wild
= nrc_exact
= NULL
;
351 for (nrc
= _nrc_list
; nrc
!= NULL
; nrc
= nrc
->nrc_next
)
352 switch (__nrc_host_match(nrc
, urlp
)) {
354 nrc
->nrc_result
= nrc_exact
;
358 nrc
->nrc_result
= nrc_wild
;
365 if (!only_pass
&& urlp
->url_user
.s
== NULL
) {
366 /* Must be an unambiguous entry of its kind */
367 if (nrc_exact
!= NULL
&& nrc_exact
->nrc_result
!= NULL
)
369 if (__nrc_find_user(urlp
, nrc_exact
))
372 if (nrc_wild
!= NULL
&& nrc_wild
->nrc_result
!= NULL
)
374 if (!__nrc_find_user(urlp
, nrc_wild
))
380 if (__nrc_find_pass(urlp
, TRU1
, nrc_exact
) ||
381 __nrc_find_pass(urlp
, TRU1
, nrc_wild
) ||
382 /* Do not try to find a password without exact user match unless we've
383 * been called during credential lookup, a.k.a. the second time */
385 __nrc_find_pass(urlp
, FAL0
, nrc_exact
) ||
386 __nrc_find_pass(urlp
, FAL0
, nrc_wild
))
394 __nrc_host_match(struct nrc_node
const *nrc
, struct url
const *urlp
)
401 /* Find a matching machine -- entries are all lowercase normalized */
402 if (nrc
->nrc_mlen
== urlp
->url_host
.l
) {
403 if (LIKELY(!memcmp(nrc
->nrc_dat
, urlp
->url_host
.s
, urlp
->url_host
.l
)))
408 /* Cannot be an exact match, but maybe the .netrc machine starts with
409 * a "*." glob, which we recognize as an extension, meaning "skip
410 * a single subdomain, then match the rest" */
411 d1
= nrc
->nrc_dat
+ 2;
413 if (l1
<= 2 || d1
[-1] != '.' || d1
[-2] != '*')
417 /* Brute skipping over one subdomain, no RFC 1035 or RFC 1122 checks;
418 * in fact this even succeeds for ".host.com", but - why care, here? */
419 d2
= urlp
->url_host
.s
;
420 l2
= urlp
->url_host
.l
;
427 if (l2
== l1
&& !memcmp(d1
, d2
, l1
))
428 /* This matches, but we won't use it directly but watch out for an
429 * exact match first! */
437 __nrc_find_user(struct url
*urlp
, struct nrc_node
const *nrc
)
441 for (; nrc
!= NULL
; nrc
= nrc
->nrc_result
)
442 if (nrc
->nrc_ulen
> 0) {
443 /* Fake it was part of URL otherwise XXX */
444 urlp
->url_had_user
= TRU1
;
445 /* That buffer will be duplicated by url_parse() in this case! */
446 urlp
->url_user
.s
= UNCONST(nrc
->nrc_dat
+ nrc
->nrc_mlen
+1);
447 urlp
->url_user
.l
= nrc
->nrc_ulen
;
452 return (nrc
!= NULL
);
456 __nrc_find_pass(struct url
*urlp
, bool_t user_match
, struct nrc_node
const *nrc
)
460 for (; nrc
!= NULL
; nrc
= nrc
->nrc_result
) {
461 bool_t um
= (nrc
->nrc_ulen
== urlp
->url_user
.l
&&
462 !memcmp(nrc
->nrc_dat
+ nrc
->nrc_mlen
+1, urlp
->url_user
.s
,
468 } else if (!um
&& nrc
->nrc_ulen
> 0)
470 if (nrc
->nrc_plen
== 0)
473 /* We are responsible for duplicating this buffer! */
474 urlp
->url_pass
.s
= savestrbuf(nrc
->nrc_dat
+ nrc
->nrc_mlen
+1 +
475 nrc
->nrc_ulen
+ 1, (urlp
->url_pass
.l
= nrc
->nrc_plen
));
480 return (nrc
!= NULL
);
482 #endif /* HAVE_NETRC */
486 _agent_shell_lookup(struct url
*urlp
, char const *comm
)
489 char const *env_addon
[8];
492 union {char const *cp
; int c
; sighandler_type sht
;} u
;
497 env_addon
[0] = str_concat_csvl(&s
, AGENT_USER
, "=", urlp
->url_user
.s
,
499 env_addon
[1] = str_concat_csvl(&s
, AGENT_USER_ENC
, "=", urlp
->url_user_enc
.s
,
501 env_addon
[2] = str_concat_csvl(&s
, AGENT_HOST
, "=", urlp
->url_host
.s
,
503 env_addon
[3] = str_concat_csvl(&s
, AGENT_HOST_PORT
, "=", urlp
->url_h_p
.s
,
506 env_addon
[4] = str_concat_csvl(&s
, NAILENV_TMPDIR
, "=", tempdir
, NULL
)->s
;
507 env_addon
[5] = str_concat_csvl(&s
, "TMPDIR", "=", tempdir
, NULL
)->s
;
511 if ((pbuf
= Popen(comm
, "r", ok_vlook(SHELL
), env_addon
, -1)) == NULL
) {
512 n_err(_("*agent-shell-lookup* startup failed (`%s')\n"), comm
);
516 for (s
.s
= NULL
, s
.l
= cl
= l
= 0; (u
.c
= getc(pbuf
)) != EOF
; ++cl
) {
517 if (u
.c
== '\n') /* xxx */
520 if (l
== sizeof(buf
) - 1) {
521 n_str_add_buf(&s
, buf
, l
);
526 n_str_add_buf(&s
, buf
, l
);
528 if (!Pclose(pbuf
, TRU1
)) {
529 if (options
& OPT_D_V
)
530 n_err(_("*agent-shell-lookup* execution failure (`%s')\n"), comm
);
534 /* We are responsible for duplicating this buffer! */
536 urlp
->url_pass
.s
= savestrbuf(s
.s
, urlp
->url_pass
.l
= s
.l
);
538 urlp
->url_pass
.s
= UNCONST(""), urlp
->url_pass
.l
= 0;
549 (urlxenc
)(char const *cp
, bool_t ispath SALLOC_DEBUG_ARGS
)
554 np
= n
= (salloc
)(strlen(cp
) * 3 +1 SALLOC_DEBUG_ARGSCALL
);
556 for (; (c1
= *cp
) != '\0'; ++cp
) {
557 /* (RFC 1738) RFC 3986, 2.3 Unreserved Characters:
558 * ALPHA / DIGIT / "-" / "." / "_" / "~"
559 * However add a special is[file]path mode for file-system friendliness */
560 if (alnumchar(c1
) || c1
== '_')
563 if (c1
!= '-' && c1
!= '.' && c1
!= '~')
566 } else if (PTRCMP(np
, >, n
) && (*cp
== '-' || *cp
== '.')) /* XXX imap */
571 n_c_to_hex_base16(np
+ 1, c1
);
581 (urlxdec
)(char const *cp SALLOC_DEBUG_ARGS
)
587 np
= n
= (salloc
)(strlen(cp
) +1 SALLOC_DEBUG_ARGSCALL
);
589 while ((c
= (uc_i
)*cp
++) != '\0') {
590 if (c
== '%' && cp
[0] != '\0' && cp
[1] != '\0') {
592 if (LIKELY((c
= n_c_from_hex_base16(cp
)) >= '\0'))
604 #ifdef HAVE_SOCKETS /* Note: not indented for that -- later: file:// etc.! */
606 url_servbyname(struct url
const *urlp
, ui16_t
*irv_or_null
)
614 { "submission", "587", 587},
615 { "smtps", "465", 465},
616 { "pop3", "110", 110},
617 { "pop3s", "995", 995},
618 { "imap", "143", 143},
619 { "imaps", "993", 993}
625 for (rv
= NULL
, i
= 0; i
< NELEM(tbl
); ++i
)
626 if (!asccasecmp(tbl
[i
].name
, urlp
->url_proto
)) {
628 if (irv_or_null
!= NULL
)
629 *irv_or_null
= tbl
[i
].portno
;
637 url_parse(struct url
*urlp
, enum cproto cproto
, char const *data
)
639 #if defined HAVE_SMTP && defined HAVE_POP3
642 #if defined HAVE_SMTP || defined HAVE_POP3
650 memset(urlp
, 0, sizeof *urlp
);
651 urlp
->url_input
= data
;
652 urlp
->url_cproto
= cproto
;
654 /* Network protocol */
655 #define _protox(X,Y) \
656 urlp->url_portno = Y;\
657 memcpy(urlp->url_proto, X "://", sizeof(X "://"));\
658 urlp->url_proto[sizeof(X) -1] = '\0';\
659 urlp->url_proto_len = sizeof(X) -1;\
660 urlp->url_proto_xlen = sizeof(X "://") -1
661 #define __if(X,Y,Z) \
662 if (!ascncasecmp(data, X "://", sizeof(X "://") -1)) {\
664 data += sizeof(X "://") -1;\
665 do { Z; } while (0);\
668 #define _if(X,Y) __if(X, Y, (void)0)
670 # define _ifs(X,Y) __if(X, Y, urlp->url_needs_tls = TRU1)
672 # define _ifs(X,Y) goto jeproto;
679 _if ("submission", 587)
690 _protox("pop3", 110);
699 _protox("imap", 143);
710 if (strstr(data
, "://") != NULL
) {
711 #if !defined __ALLPROTO || !defined HAVE_SSL
714 n_err(_("URL \"proto://\" prefix invalid: \"%s\"\n"), urlp
->url_input
);
719 /* User and password, I */
721 if ((cp
= _url_last_at_before_slash(data
)) != NULL
) {
722 size_t l
= PTR2SIZE(cp
- data
);
723 char const *d
= data
;
724 char *ub
= ac_alloc(l
+1);
726 urlp
->url_had_user
= TRU1
;
729 /* And also have a password? */
730 if ((cp
= memchr(d
, ':', l
)) != NULL
) {
731 size_t i
= PTR2SIZE(cp
- d
);
734 memcpy(ub
, cp
+ 1, l
);
736 urlp
->url_pass
.l
= strlen(urlp
->url_pass
.s
= urlxdec(ub
));
738 if (strcmp(ub
, urlxenc(urlp
->url_pass
.s
, FAL0
))) {
739 n_err(_("String is not properly URL percent encoded: \"%s\"\n"),
748 urlp
->url_user
.l
= strlen(urlp
->url_user
.s
= urlxdec(ub
));
749 urlp
->url_user_enc
.l
= strlen(
750 urlp
->url_user_enc
.s
= urlxenc(urlp
->url_user
.s
, FAL0
));
752 if (urlp
->url_user_enc
.l
!= l
|| memcmp(urlp
->url_user_enc
.s
, ub
, l
)) {
753 n_err(_("String is not properly URL percent encoded: \"%s\"\n"), ub
);
760 /* Servername and port -- and possible path suffix */
761 if ((cp
= strchr(data
, ':')) != NULL
) { /* TODO URL parse, IPv6 support */
765 urlp
->url_port
= x
= savestr(x
= cp
+ 1);
766 if ((x
= strchr(x
, '/')) != NULL
)
768 l
= strtol(urlp
->url_port
, &eptr
, 10);
769 if (*eptr
!= '\0' || l
<= 0 || UICMP(32, l
, >=, 0xFFFFu
)) {
770 n_err(_("URL with invalid port number: \"%s\"\n"), urlp
->url_input
);
773 urlp
->url_portno
= (ui16_t
)l
;
775 if ((x
= strchr(data
, '/')) != NULL
)
776 data
= savestrbuf(data
, PTR2SIZE(x
- data
));
777 cp
= UNCONST(data
+ strlen(data
));
780 /* A (non-empty) path may only occur with IMAP */
781 if (x
!= NULL
&& x
[1] != '\0') {
783 if (cproto
!= CPROTO_IMAP
) {
785 n_err(_("URL protocol doesn't support paths: \"%s\"\n"),
790 urlp
->url_path
.l
= strlen(++x
);
791 urlp
->url_path
.s
= savestrbuf(x
, urlp
->url_path
.l
);
795 urlp
->url_host
.s
= savestrbuf(data
, urlp
->url_host
.l
= PTR2SIZE(cp
- data
));
797 for (cp
= urlp
->url_host
.s
, i
= urlp
->url_host
.l
; i
!= 0; ++cp
, --i
)
798 *cp
= lowerconv(*cp
);
801 /* .url_h_p: HOST:PORT */
803 struct str
*s
= &urlp
->url_h_p
;
805 s
->s
= salloc(urlp
->url_host
.l
+ 1 + sizeof("65536")-1 +1);
806 memcpy(s
->s
, urlp
->url_host
.s
, i
= urlp
->url_host
.l
);
807 if (urlp
->url_port
!= NULL
) {
808 size_t j
= strlen(urlp
->url_port
);
810 memcpy(s
->s
+ i
, urlp
->url_port
, j
);
818 * If there was no user in the URL, do we have *user-HOST* or *user*? */
819 if (!urlp
->url_had_user
) {
820 if ((urlp
->url_user
.s
= xok_vlook(user
, urlp
, OXM_PLAIN
| OXM_H_P
))
822 /* No, check wether .netrc lookup is desired */
824 if (!ok_blook(v15_compat
) ||
825 !xok_blook(netrc_lookup
, urlp
, OXM_PLAIN
| OXM_H_P
) ||
826 !_nrc_lookup(urlp
, FAL0
))
828 urlp
->url_user
.s
= UNCONST(myname
);
831 urlp
->url_user
.l
= strlen(urlp
->url_user
.s
);
832 urlp
->url_user
.s
= savestrbuf(urlp
->url_user
.s
, urlp
->url_user
.l
);
833 urlp
->url_user_enc
.l
= strlen(
834 urlp
->url_user_enc
.s
= urlxenc(urlp
->url_user
.s
, FAL0
));
837 /* And then there are a lot of prebuild string combinations TODO do lazy */
839 /* .url_u_h: .url_user@.url_host
840 * For SMTP we apply ridiculously complicated *v15-compat* plus
841 * *smtp-hostname* / *hostname* dependent rules */
845 if (cproto
== CPROTO_SMTP
&& ok_blook(v15_compat
) &&
846 (cp
= ok_vlook(smtp_hostname
)) != NULL
) {
849 h
.s
= savestrbuf(cp
, h
.l
= strlen(cp
));
854 i
= urlp
->url_user
.l
;
856 s
->s
= salloc(i
+ 1 + h
.l
+1);
858 memcpy(s
->s
, urlp
->url_user
.s
, i
);
861 memcpy(s
->s
+ i
, h
.s
, h
.l
+1);
866 /* .url_u_h_p: .url_user@.url_host[:.url_port] */
867 { struct str
*s
= &urlp
->url_u_h_p
;
868 size_t i
= urlp
->url_user
.l
;
870 s
->s
= salloc(i
+ 1 + urlp
->url_h_p
.l
+1);
872 memcpy(s
->s
, urlp
->url_user
.s
, i
);
875 memcpy(s
->s
+ i
, urlp
->url_h_p
.s
, urlp
->url_h_p
.l
+1);
876 i
+= urlp
->url_h_p
.l
;
880 /* .url_eu_h_p: .url_user_enc@.url_host[:.url_port] */
881 { struct str
*s
= &urlp
->url_eu_h_p
;
882 size_t i
= urlp
->url_user_enc
.l
;
884 s
->s
= salloc(i
+ 1 + urlp
->url_h_p
.l
+1);
886 memcpy(s
->s
, urlp
->url_user_enc
.s
, i
);
889 memcpy(s
->s
+ i
, urlp
->url_h_p
.s
, urlp
->url_h_p
.l
+1);
890 i
+= urlp
->url_h_p
.l
;
894 /* .url_p_u_h_p: .url_proto://.url_u_h_p */
896 char *ud
= salloc((i
= urlp
->url_proto_xlen
+ urlp
->url_u_h_p
.l
) +1);
898 urlp
->url_proto
[urlp
->url_proto_len
] = ':';
899 memcpy(sstpcpy(ud
, urlp
->url_proto
), urlp
->url_u_h_p
.s
,
900 urlp
->url_u_h_p
.l
+1);
901 urlp
->url_proto
[urlp
->url_proto_len
] = '\0';
903 urlp
->url_p_u_h_p
= ud
;
906 /* .url_p_eu_h_p, .url_p_eu_h_p_p: .url_proto://.url_eu_h_p[/.url_path] */
908 char *ud
= salloc((i
= urlp
->url_proto_xlen
+ urlp
->url_eu_h_p
.l
) +
909 1 + urlp
->url_path
.l
+1);
911 urlp
->url_proto
[urlp
->url_proto_len
] = ':';
912 memcpy(sstpcpy(ud
, urlp
->url_proto
), urlp
->url_eu_h_p
.s
,
913 urlp
->url_eu_h_p
.l
+1);
914 urlp
->url_proto
[urlp
->url_proto_len
] = '\0';
916 if (urlp
->url_path
.l
== 0)
917 urlp
->url_p_eu_h_p
= urlp
->url_p_eu_h_p_p
= ud
;
919 urlp
->url_p_eu_h_p
= savestrbuf(ud
, i
);
920 urlp
->url_p_eu_h_p_p
= ud
;
923 memcpy(ud
, urlp
->url_path
.s
, urlp
->url_path
.l
+1);
928 #endif /* __ANYPROTO */
937 ccred_lookup_old(struct ccred
*ccp
, enum cproto cproto
, char const *addr
)
939 char const *pname
, *pxstr
, *authdef
;
940 size_t pxlen
, addrlen
, i
;
943 enum {NONE
=0, WANT_PASS
=1<<0, REQ_PASS
=1<<1, WANT_USER
=1<<2, REQ_USER
=1<<3}
945 bool_t addr_is_nuser
= FAL0
; /* XXX v15.0 legacy! v15_compat */
948 memset(ccp
, 0, sizeof *ccp
);
955 pxlen
= sizeof("smtp-auth") -1;
956 authmask
= AUTHTYPE_NONE
| AUTHTYPE_PLAIN
| AUTHTYPE_LOGIN
|
957 AUTHTYPE_CRAM_MD5
| AUTHTYPE_GSSAPI
;
959 addr_is_nuser
= TRU1
;
964 pxlen
= sizeof("pop3-auth") -1;
965 authmask
= AUTHTYPE_PLAIN
;
970 ccp
->cc_cproto
= cproto
;
971 addrlen
= strlen(addr
);
972 vbuf
= ac_alloc(pxlen
+ addrlen
+ sizeof("-password-")-1 +1);
973 memcpy(vbuf
, pxstr
, pxlen
);
975 /* Authentication type */
977 memcpy(vbuf
+ pxlen
+ 1, addr
, addrlen
+1);
978 if ((s
= vok_vlook(vbuf
)) == NULL
) {
980 if ((s
= vok_vlook(vbuf
)) == NULL
)
981 s
= UNCONST(authdef
);
984 if (!asccasecmp(s
, "none")) {
985 ccp
->cc_auth
= "NONE";
986 ccp
->cc_authtype
= AUTHTYPE_NONE
;
988 } else if (!asccasecmp(s
, "plain")) {
989 ccp
->cc_auth
= "PLAIN";
990 ccp
->cc_authtype
= AUTHTYPE_PLAIN
;
991 ware
= REQ_PASS
| REQ_USER
;
992 } else if (!asccasecmp(s
, "login")) {
993 ccp
->cc_auth
= "LOGIN";
994 ccp
->cc_authtype
= AUTHTYPE_LOGIN
;
995 ware
= REQ_PASS
| REQ_USER
;
996 } else if (!asccasecmp(s
, "cram-md5")) {
997 ccp
->cc_auth
= "CRAM-MD5";
998 ccp
->cc_authtype
= AUTHTYPE_CRAM_MD5
;
999 ware
= REQ_PASS
| REQ_USER
;
1000 } else if (!asccasecmp(s
, "gssapi")) {
1001 ccp
->cc_auth
= "GSS-API";
1002 ccp
->cc_authtype
= AUTHTYPE_GSSAPI
;
1007 if (!(ccp
->cc_authtype
& authmask
)) {
1008 n_err(_("Unsupported %s authentication method: %s\n"), pname
, s
);
1013 if (ccp
->cc_authtype
== AUTHTYPE_CRAM_MD5
) {
1014 n_err(_("No CRAM-MD5 support compiled in\n"));
1019 # ifndef HAVE_GSSAPI
1020 if (ccp
->cc_authtype
== AUTHTYPE_GSSAPI
) {
1021 n_err(_("No GSS-API support compiled in\n"));
1028 if (!(ware
& (WANT_USER
| REQ_USER
)))
1031 if (!addr_is_nuser
) {
1032 if ((s
= _url_last_at_before_slash(addr
)) != NULL
) {
1033 ccp
->cc_user
.s
= urlxdec(savestrbuf(addr
, PTR2SIZE(s
- addr
)));
1034 ccp
->cc_user
.l
= strlen(ccp
->cc_user
.s
);
1035 } else if (ware
& REQ_USER
)
1040 memcpy(vbuf
+ pxlen
, "-user-", i
= sizeof("-user-") -1);
1042 memcpy(vbuf
+ i
, addr
, addrlen
+1);
1043 if ((s
= vok_vlook(vbuf
)) == NULL
) {
1045 if ((s
= vok_vlook(vbuf
)) == NULL
&& (ware
& REQ_USER
)) {
1046 if ((s
= getuser(NULL
)) == NULL
) {
1047 jgetuser
: /* TODO v15.0: today we simply bail, but we should call getuser().
1048 * TODO even better: introduce "PROTO-user" and "PROTO-pass" and
1049 * TODO check that first, then! change control flow, grow vbuf */
1050 n_err(_("A user is necessary for %s authentication\n"), pname
);
1056 ccp
->cc_user
.l
= strlen(ccp
->cc_user
.s
= savestr(s
));
1060 if (!(ware
& (WANT_PASS
| REQ_PASS
)))
1063 if (!addr_is_nuser
) {
1064 memcpy(vbuf
, "password-", i
= sizeof("password-") -1);
1066 memcpy(vbuf
+ pxlen
, "-password-", i
= sizeof("-password-") -1);
1069 memcpy(vbuf
+ i
, addr
, addrlen
+1);
1070 if ((s
= vok_vlook(vbuf
)) == NULL
) {
1072 if ((!addr_is_nuser
|| (s
= vok_vlook(vbuf
)) == NULL
) &&
1073 (ware
& REQ_PASS
)) {
1074 if ((s
= getpassword(NULL
)) == NULL
) {
1075 n_err(_("A password is necessary for %s authentication\n"),
1083 ccp
->cc_pass
.l
= strlen(ccp
->cc_pass
.s
= savestr(s
));
1087 if (ccp
!= NULL
&& (options
& OPT_D_VV
))
1088 n_err(_("Credentials: host \"%s\", user \"%s\", pass \"%s\"\n"),
1089 addr
, (ccp
->cc_user
.s
!= NULL
? ccp
->cc_user
.s
: ""),
1090 (ccp
->cc_pass
.s
!= NULL
? ccp
->cc_pass
.s
: ""));
1092 return (ccp
!= NULL
);
1096 ccred_lookup(struct ccred
*ccp
, struct url
*urlp
)
1098 char const *pstr
, *authdef
;
1100 enum okeys authokey
;
1102 enum {NONE
=0, WANT_PASS
=1<<0, REQ_PASS
=1<<1, WANT_USER
=1<<2, REQ_USER
=1<<3}
1106 memset(ccp
, 0, sizeof *ccp
);
1107 ccp
->cc_user
= urlp
->url_user
;
1109 switch ((ccp
->cc_cproto
= urlp
->url_cproto
)) {
1113 authokey
= ok_v_smtp_auth
;
1114 authmask
= AUTHTYPE_NONE
| AUTHTYPE_PLAIN
| AUTHTYPE_LOGIN
|
1115 AUTHTYPE_CRAM_MD5
| AUTHTYPE_GSSAPI
;
1120 authokey
= ok_v_pop3_auth
;
1121 authmask
= AUTHTYPE_PLAIN
;
1126 /* Authentication type */
1127 if ((s
= xok_VLOOK(authokey
, urlp
, OXM_ALL
)) == NULL
)
1128 s
= UNCONST(authdef
);
1130 if (!asccasecmp(s
, "none")) {
1131 ccp
->cc_auth
= "NONE";
1132 ccp
->cc_authtype
= AUTHTYPE_NONE
;
1134 } else if (!asccasecmp(s
, "plain")) {
1135 ccp
->cc_auth
= "PLAIN";
1136 ccp
->cc_authtype
= AUTHTYPE_PLAIN
;
1137 ware
= REQ_PASS
| REQ_USER
;
1138 } else if (!asccasecmp(s
, "login")) {
1139 ccp
->cc_auth
= "LOGIN";
1140 ccp
->cc_authtype
= AUTHTYPE_LOGIN
;
1141 ware
= REQ_PASS
| REQ_USER
;
1142 } else if (!asccasecmp(s
, "cram-md5")) {
1143 ccp
->cc_auth
= "CRAM-MD5";
1144 ccp
->cc_authtype
= AUTHTYPE_CRAM_MD5
;
1145 ware
= REQ_PASS
| REQ_USER
;
1146 } else if (!asccasecmp(s
, "gssapi")) {
1147 ccp
->cc_auth
= "GSS-API";
1148 ccp
->cc_authtype
= AUTHTYPE_GSSAPI
;
1153 if (!(ccp
->cc_authtype
& authmask
)) {
1154 n_err(_("Unsupported %s authentication method: %s\n"), pstr
, s
);
1159 if (ccp
->cc_authtype
== AUTHTYPE_CRAM_MD5
) {
1160 n_err(_("No CRAM-MD5 support compiled in\n"));
1165 # ifndef HAVE_GSSAPI
1166 if (ccp
->cc_authtype
== AUTHTYPE_GSSAPI
) {
1167 n_err(_("No GSS-API support compiled in\n"));
1174 ccp
->cc_pass
= urlp
->url_pass
;
1175 if (ccp
->cc_pass
.s
!= NULL
)
1178 if ((s
= xok_vlook(password
, urlp
, OXM_ALL
)) != NULL
)
1181 if ((s
= xok_vlook(agent_shell_lookup
, urlp
, OXM_ALL
)) != NULL
) {
1182 if (!_agent_shell_lookup(urlp
, s
)) {
1185 } else if (urlp
->url_pass
.s
!= NULL
) {
1186 ccp
->cc_pass
= urlp
->url_pass
;
1192 if (xok_blook(netrc_lookup
, urlp
, OXM_ALL
) && _nrc_lookup(urlp
, TRU1
)) {
1193 ccp
->cc_pass
= urlp
->url_pass
;
1197 if (ware
& REQ_PASS
) {
1198 if ((s
= getpassword(NULL
)) != NULL
)
1200 ccp
->cc_pass
.l
= strlen(ccp
->cc_pass
.s
= savestr(s
));
1202 n_err(_("A password is necessary for %s authentication\n"), pstr
);
1208 if (ccp
!= NULL
&& (options
& OPT_D_VV
))
1209 n_err(_("Credentials: host \"%s\", user \"%s\", pass \"%s\"\n"),
1210 urlp
->url_h_p
.s
, (ccp
->cc_user
.s
!= NULL
? ccp
->cc_user
.s
: ""),
1211 (ccp
->cc_pass
.s
!= NULL
? ccp
->cc_pass
.s
: ""));
1213 return (ccp
!= NULL
);
1215 #endif /* HAVE_SOCKETS */
1222 struct nrc_node
*nrc
;
1229 if (argv
[1] != NULL
)
1231 if (!asccasecmp(*argv
, "show"))
1234 if (!asccasecmp(*argv
, "load"))
1236 if (!asccasecmp(*argv
, "clear"))
1239 n_err(_("Synopsis: netrc: (<show> or) <clear> the .netrc cache\n"));
1243 return (v
== NULL
? !STOP
: !OKAY
); /* xxx 1:bad 0:good -- do some */
1249 if (_nrc_list
== NULL
)
1251 if (_nrc_list
== NRC_NODE_ERR
) {
1252 n_err(_("Interpolate what file?\n"));
1259 if ((fp
= Ftmp(NULL
, "netrc", OF_RDWR
| OF_UNLINK
| OF_REGISTER
)) == NULL
) {
1260 n_perr(_("tmpfile"), 0);
1265 for (l
= 0, nrc
= _nrc_list
; nrc
!= NULL
; ++l
, nrc
= nrc
->nrc_next
) {
1266 fprintf(fp
, _("machine %s "), nrc
->nrc_dat
);
1267 if (nrc
->nrc_ulen
> 0)
1268 fprintf(fp
, _("login \"%s\" "),
1269 string_quote(nrc
->nrc_dat
+ nrc
->nrc_mlen
+1));
1270 if (nrc
->nrc_plen
> 0)
1271 fprintf(fp
, _("password \"%s\"\n"),
1272 string_quote(nrc
->nrc_dat
+ nrc
->nrc_mlen
+1 + nrc
->nrc_ulen
+1));
1277 page_or_print(fp
, l
);
1283 if (_nrc_list
== NRC_NODE_ERR
)
1285 while ((nrc
= _nrc_list
) != NULL
) {
1286 _nrc_list
= nrc
->nrc_next
;
1291 #endif /* HAVE_NETRC */
1295 md5tohex(char hex
[MD5TOHEX_SIZE
], void const *vp
)
1297 char const *cp
= vp
;
1301 for (i
= 0; i
< MD5TOHEX_SIZE
/ 2; ++i
) {
1303 # define __hex(n) ((n) > 9 ? (n) - 10 + 'a' : (n) + '0')
1304 hex
[j
] = __hex((cp
[i
] & 0xF0) >> 4);
1305 hex
[++j
] = __hex(cp
[i
] & 0x0F);
1313 cram_md5_string(struct str
const *user
, struct str
const *pass
,
1317 char digest
[16], *cp
;
1321 in
.s
= UNCONST(b64
);
1322 in
.l
= strlen(in
.s
);
1323 b64_decode(&out
, &in
, NULL
);
1324 assert(out
.s
!= NULL
);
1326 hmac_md5((uc_i
*)out
.s
, out
.l
, (uc_i
*)pass
->s
, pass
->l
, digest
);
1328 cp
= md5tohex(salloc(MD5TOHEX_SIZE
+1), digest
);
1330 in
.l
= user
->l
+ MD5TOHEX_SIZE
+1;
1331 in
.s
= ac_alloc(user
->l
+ 1 + MD5TOHEX_SIZE
+1);
1332 memcpy(in
.s
, user
->s
, user
->l
);
1333 in
.s
[user
->l
] = ' ';
1334 memcpy(in
.s
+ user
->l
+ 1, cp
, MD5TOHEX_SIZE
);
1335 b64_encode(&out
, &in
, B64_SALLOC
| B64_CRLF
);
1342 hmac_md5(unsigned char *text
, int text_len
, unsigned char *key
, int key_len
,
1346 * This code is taken from
1348 * Network Working Group H. Krawczyk
1349 * Request for Comments: 2104 IBM
1350 * Category: Informational M. Bellare
1357 * HMAC: Keyed-Hashing for Message Authentication
1360 unsigned char k_ipad
[65]; /* inner padding - key XORd with ipad */
1361 unsigned char k_opad
[65]; /* outer padding - key XORd with opad */
1362 unsigned char tk
[16];
1366 /* if key is longer than 64 bytes reset it to key=MD5(key) */
1371 md5_update(&tctx
, key
, key_len
);
1372 md5_final(tk
, &tctx
);
1378 /* the HMAC_MD5 transform looks like:
1380 * MD5(K XOR opad, MD5(K XOR ipad, text))
1382 * where K is an n byte key
1383 * ipad is the byte 0x36 repeated 64 times
1384 * opad is the byte 0x5c repeated 64 times
1385 * and text is the data being protected */
1387 /* start out by storing key in pads */
1388 memset(k_ipad
, 0, sizeof k_ipad
);
1389 memset(k_opad
, 0, sizeof k_opad
);
1390 memcpy(k_ipad
, key
, key_len
);
1391 memcpy(k_opad
, key
, key_len
);
1393 /* XOR key with ipad and opad values */
1394 for (i
=0; i
<64; i
++) {
1399 /* perform inner MD5 */
1400 md5_init(&context
); /* init context for 1st pass */
1401 md5_update(&context
, k_ipad
, 64); /* start with inner pad */
1402 md5_update(&context
, text
, text_len
); /* then text of datagram */
1403 md5_final(digest
, &context
); /* finish up 1st pass */
1405 /* perform outer MD5 */
1406 md5_init(&context
); /* init context for 2nd pass */
1407 md5_update(&context
, k_opad
, 64); /* start with outer pad */
1408 md5_update(&context
, digest
, 16); /* then results of 1st hash */
1409 md5_final(digest
, &context
); /* finish up 2nd pass */
1412 #endif /* HAVE_MD5 */