X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=imap-send.c;h=12e8318dc6a690d159751803003a2fce4c9ab94c;hb=bd193f46b70fd3f8a55e2a8dcbb1fb2b4eec13d6;hp=5631930bc3462c5d85d29e7e840f1cf24cd7111b;hpb=c444c16589f95ac22d8e3ffe603cd7f0613512ce;p=git.git diff --git a/imap-send.c b/imap-send.c index 5631930bc..12e8318dc 100644 --- a/imap-send.c +++ b/imap-send.c @@ -27,6 +27,9 @@ #include "run-command.h" #ifdef NO_OPENSSL typedef void *SSL; +#else +#include +#include #endif struct store_conf { @@ -38,28 +41,6 @@ struct store_conf { unsigned trash_remote_new:1, trash_only_new:1; }; -struct string_list { - struct string_list *next; - char string[1]; -}; - -struct channel_conf { - struct channel_conf *next; - char *name; - struct store_conf *master, *slave; - char *master_name, *slave_name; - char *sync_state; - struct string_list *patterns; - int mops, sops; - unsigned max_messages; /* for slave only */ -}; - -struct group_conf { - struct group_conf *next; - char *name; - struct string_list *channels; -}; - /* For message->status */ #define M_RECENT (1<<0) /* unsyncable flag; maildir_* depend on this being 1<<0 */ #define M_DEAD (1<<1) /* expunged */ @@ -67,7 +48,6 @@ struct group_conf { struct message { struct message *next; - /* struct string_list *keywords; */ size_t size; /* zero implies "not fetched" */ int uid; unsigned char flags, status; @@ -139,12 +119,25 @@ struct imap_server_conf { int use_ssl; int ssl_verify; int use_html; + char *auth_method; +}; + +static struct imap_server_conf server = { + NULL, /* name */ + NULL, /* tunnel */ + NULL, /* host */ + 0, /* port */ + NULL, /* user */ + NULL, /* pass */ + 0, /* use_ssl */ + 1, /* ssl_verify */ + 0, /* use_html */ + NULL, /* auth_method */ }; struct imap_store_conf { struct store_conf gen; struct imap_server_conf *server; - unsigned use_namespace:1; }; #define NIL (void *)0x1 @@ -213,6 +206,7 @@ enum CAPABILITY { LITERALPLUS, NAMESPACE, STARTTLS, + AUTH_CRAM_MD5 }; static const char *cap_list[] = { @@ -221,6 +215,7 @@ static const char *cap_list[] = { "LITERAL+", "NAMESPACE", "STARTTLS", + "AUTH=CRAM-MD5", }; #define RESP_OK 0 @@ -524,9 +519,13 @@ static struct imap_cmd *v_issue_imap_cmd(struct imap_store *ctx, while (imap->literal_pending) get_cmd_result(ctx, NULL); - bufl = nfsnprintf(buf, sizeof(buf), cmd->cb.data ? CAP(LITERALPLUS) ? - "%d %s{%d+}\r\n" : "%d %s{%d}\r\n" : "%d %s\r\n", - cmd->tag, cmd->cmd, cmd->cb.dlen); + if (!cmd->cb.data) + bufl = nfsnprintf(buf, sizeof(buf), "%d %s\r\n", cmd->tag, cmd->cmd); + else + bufl = nfsnprintf(buf, sizeof(buf), "%d %s{%d%s}\r\n", + cmd->tag, cmd->cmd, cmd->cb.dlen, + CAP(LITERALPLUS) ? "+" : ""); + if (Verbose) { if (imap->num_in_progress) printf("(%d in progress) ", imap->num_in_progress); @@ -948,6 +947,87 @@ static void imap_close_store(struct store *ctx) free(ctx); } +#ifndef NO_OPENSSL + +/* + * hexchar() and cram() functions are based on the code from the isync + * project (http://isync.sf.net/). + */ +static char hexchar(unsigned int b) +{ + return b < 10 ? '0' + b : 'a' + (b - 10); +} + +#define ENCODED_SIZE(n) (4*((n+2)/3)) +static char *cram(const char *challenge_64, const char *user, const char *pass) +{ + int i, resp_len, encoded_len, decoded_len; + HMAC_CTX hmac; + unsigned char hash[16]; + char hex[33]; + char *response, *response_64, *challenge; + + /* + * length of challenge_64 (i.e. base-64 encoded string) is a good + * enough upper bound for challenge (decoded result). + */ + encoded_len = strlen(challenge_64); + challenge = xmalloc(encoded_len); + decoded_len = EVP_DecodeBlock((unsigned char *)challenge, + (unsigned char *)challenge_64, encoded_len); + if (decoded_len < 0) + die("invalid challenge %s", challenge_64); + HMAC_Init(&hmac, (unsigned char *)pass, strlen(pass), EVP_md5()); + HMAC_Update(&hmac, (unsigned char *)challenge, decoded_len); + HMAC_Final(&hmac, hash, NULL); + HMAC_CTX_cleanup(&hmac); + + hex[32] = 0; + for (i = 0; i < 16; i++) { + hex[2 * i] = hexchar((hash[i] >> 4) & 0xf); + hex[2 * i + 1] = hexchar(hash[i] & 0xf); + } + + /* response: " " */ + resp_len = strlen(user) + 1 + strlen(hex) + 1; + response = xmalloc(resp_len); + sprintf(response, "%s %s", user, hex); + + response_64 = xmalloc(ENCODED_SIZE(resp_len) + 1); + encoded_len = EVP_EncodeBlock((unsigned char *)response_64, + (unsigned char *)response, resp_len); + if (encoded_len < 0) + die("EVP_EncodeBlock error"); + response_64[encoded_len] = '\0'; + return (char *)response_64; +} + +#else + +static char *cram(const char *challenge_64, const char *user, const char *pass) +{ + die("If you want to use CRAM-MD5 authenticate method, " + "you have to build git-imap-send with OpenSSL library."); +} + +#endif + +static int auth_cram_md5(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt) +{ + int ret; + char *response; + + response = cram(prompt, server.user, server.pass); + + ret = socket_write(&ctx->imap->buf.sock, response, strlen(response)); + if (ret != strlen(response)) + return error("IMAP error: sending response failed\n"); + + free(response); + + return 0; +} + static struct store *imap_open_store(struct imap_server_conf *srvc) { struct imap_store *ctx; @@ -965,7 +1045,7 @@ static struct store *imap_open_store(struct imap_server_conf *srvc) if (srvc->tunnel) { const char *argv[] = { srvc->tunnel, NULL }; - struct child_process tunnel = {0}; + struct child_process tunnel = {NULL}; imap_info("Starting tunnel '%s'... ", srvc->tunnel); @@ -986,7 +1066,7 @@ static struct store *imap_open_store(struct imap_server_conf *srvc) int gai; char portstr[6]; - snprintf(portstr, sizeof(portstr), "%hu", srvc->port); + snprintf(portstr, sizeof(portstr), "%d", srvc->port); memset(&hints, 0, sizeof(hints)); hints.ai_socktype = SOCK_STREAM; @@ -1089,13 +1169,13 @@ static struct store *imap_open_store(struct imap_server_conf *srvc) if (!preauth) { #ifndef NO_OPENSSL if (!srvc->use_ssl && CAP(STARTTLS)) { - if (imap_exec(ctx, 0, "STARTTLS") != RESP_OK) + if (imap_exec(ctx, NULL, "STARTTLS") != RESP_OK) goto bail; if (ssl_socket_connect(&imap->buf.sock, 1, srvc->ssl_verify)) goto bail; /* capabilities may have changed, so get the new capabilities */ - if (imap_exec(ctx, 0, "CAPABILITY") != RESP_OK) + if (imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK) goto bail; } #endif @@ -1107,7 +1187,7 @@ static struct store *imap_open_store(struct imap_server_conf *srvc) if (!srvc->pass) { char prompt[80]; sprintf(prompt, "Password (%s@%s): ", srvc->user, srvc->host); - arg = getpass(prompt); + arg = git_getpass(prompt); if (!arg) { perror("getpass"); exit(1); @@ -1126,12 +1206,37 @@ static struct store *imap_open_store(struct imap_server_conf *srvc) fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n", srvc->user, srvc->host); goto bail; } - if (!imap->buf.sock.ssl) - imap_warn("*** IMAP Warning *** Password is being " - "sent in the clear\n"); - if (imap_exec(ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass) != RESP_OK) { - fprintf(stderr, "IMAP error: LOGIN failed\n"); - goto bail; + + if (srvc->auth_method) { + struct imap_cmd_cb cb; + + if (!strcmp(srvc->auth_method, "CRAM-MD5")) { + if (!CAP(AUTH_CRAM_MD5)) { + fprintf(stderr, "You specified" + "CRAM-MD5 as authentication method, " + "but %s doesn't support it.\n", srvc->host); + goto bail; + } + /* CRAM-MD5 */ + + memset(&cb, 0, sizeof(cb)); + cb.cont = auth_cram_md5; + if (imap_exec(ctx, &cb, "AUTHENTICATE CRAM-MD5") != RESP_OK) { + fprintf(stderr, "IMAP error: AUTHENTICATE CRAM-MD5 failed\n"); + goto bail; + } + } else { + fprintf(stderr, "Unknown authentication method:%s\n", srvc->host); + goto bail; + } + } else { + if (!imap->buf.sock.ssl) + imap_warn("*** IMAP Warning *** Password is being " + "sent in the clear\n"); + if (imap_exec(ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass) != RESP_OK) { + fprintf(stderr, "IMAP error: LOGIN failed\n"); + goto bail; + } } } /* !preauth */ @@ -1306,8 +1411,14 @@ static int count_messages(struct msg_data *msg) while (1) { if (!prefixcmp(p, "From ")) { + p = strstr(p+5, "\nFrom: "); + if (!p) break; + p = strstr(p+7, "\nDate: "); + if (!p) break; + p = strstr(p+7, "\nSubject: "); + if (!p) break; + p += 10; count++; - p += 5; } p = strstr(p+5, "\nFrom "); if (!p) @@ -1348,18 +1459,6 @@ static int split_msg(struct msg_data *all_msgs, struct msg_data *msg, int *ofs) return 1; } -static struct imap_server_conf server = { - NULL, /* name */ - NULL, /* tunnel */ - NULL, /* host */ - 0, /* port */ - NULL, /* user */ - NULL, /* pass */ - 0, /* use_ssl */ - 1, /* ssl_verify */ - 0, /* use_html */ -}; - static char *imap_folder; static int git_imap_config(const char *key, const char *val, void *cb) @@ -1399,6 +1498,9 @@ static int git_imap_config(const char *key, const char *val, void *cb) server.port = git_config_int(key, val); else if (!strcmp("tunnel", key)) server.tunnel = xstrdup(val); + else if (!strcmp("authmethod", key)) + server.auth_method = xstrdup(val); + return 0; }