X-Git-Url: https://git.sommitrealweird.co.uk/onak.git/blobdiff_plain/8e58a1769ce5e492dd68904dfc81b6e077fc2a3a..HEAD:/keydb_pg.c diff --git a/keydb_pg.c b/keydb_pg.c index d2a2a55..1ec0a1a 100644 --- a/keydb_pg.c +++ b/keydb_pg.c @@ -1,16 +1,25 @@ /* * keydb_pg.c - Routines to store and fetch keys in a PostGres database. * - * Jonathan McDowell + * Copyright 2002-2004 Jonathan McDowell * - * Copyright 2002 Project Purple + * This program is free software: you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., 51 + * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #include #include -//#include -//#include #include #include #include @@ -20,12 +29,14 @@ #include #include +#include "hash.h" #include "keydb.h" #include "keyid.h" -#include "keyindex.h" +#include "decodekey.h" #include "keystructs.h" +#include "log.h" #include "mem.h" -#include "onak_conf.h" +#include "onak-conf.h" #include "parsekey.h" /** @@ -36,17 +47,17 @@ static PGconn *dbconn = NULL; /** * keydb_fetchchar - Fetches a char from a file. */ -static int keydb_fetchchar(void *fd, size_t count, unsigned char *c) +static int keydb_fetchchar(void *fd, size_t count, void *c) { - return (!lo_read(dbconn, *(int *) fd, c, count)); + return (!lo_read(dbconn, *(int *) fd, (char *) c, count)); } /** * keydb_putchar - Puts a char to a file. */ -static int keydb_putchar(void *fd, unsigned char c) +static int keydb_putchar(void *fd, size_t count, void *c) { - return !(lo_write(dbconn, *(int *) fd, &c, sizeof(c))); + return !(lo_write(dbconn, *(int *) fd, (char *) c, count)); } /** @@ -56,7 +67,7 @@ static int keydb_putchar(void *fd, unsigned char c) * this file are called in order to allow the DB to be initialized ready * for access. */ -void initdb(void) +static void pg_initdb(bool readonly) { dbconn = PQsetdbLogin(config.pg_dbhost, // host NULL, // port @@ -67,8 +78,8 @@ void initdb(void) config.pg_dbpass); // password if (PQstatus(dbconn) == CONNECTION_BAD) { - fprintf(stderr, "Connection to database failed.\n"); - fprintf(stderr, "%s\n", PQerrorMessage(dbconn)); + logthing(LOGTHING_CRITICAL, "Connection to database failed."); + logthing(LOGTHING_CRITICAL, "%s", PQerrorMessage(dbconn)); PQfinish(dbconn); dbconn = NULL; exit(1); @@ -81,16 +92,49 @@ void initdb(void) * This function should be called upon program exit to allow the DB to * cleanup after itself. */ -void cleanupdb(void) +static void pg_cleanupdb(void) { PQfinish(dbconn); dbconn = NULL; } +/** + * starttrans - Start a transaction. + * + * Start a transaction. Intended to be used if we're about to perform many + * operations on the database to help speed it all up, or if we want + * something to only succeed if all relevant operations are successful. + */ +static bool pg_starttrans(void) +{ + PGresult *result = NULL; + + result = PQexec(dbconn, "BEGIN"); + PQclear(result); + + return true; +} + +/** + * endtrans - End a transaction. + * + * Ends a transaction. + */ +static void pg_endtrans(void) +{ + PGresult *result = NULL; + + result = PQexec(dbconn, "COMMIT"); + PQclear(result); + + return; +} + /** * fetch_key - Given a keyid fetch the key from storage. * @keyid: The keyid to fetch. * @publickey: A pointer to a structure to return the key in. + * @intrans: If we're already in a transaction. * * We use the hex representation of the keyid as the filename to fetch the * key from. The key is stored in the file as a binary OpenPGP stream of @@ -98,7 +142,8 @@ void cleanupdb(void) * in and then parse_keys() to parse the packets into a publickey * structure. */ -int fetch_key(uint64_t keyid, struct openpgp_publickey **publickey) +static int pg_fetch_key(uint64_t keyid, struct openpgp_publickey **publickey, + bool intrans) { struct openpgp_packet_list *packets = NULL; PGresult *result = NULL; @@ -109,17 +154,20 @@ int fetch_key(uint64_t keyid, struct openpgp_publickey **publickey) int numkeys = 0; Oid key_oid; - result = PQexec(dbconn, "BEGIN"); - PQclear(result); + if (!intrans) { + result = PQexec(dbconn, "BEGIN"); + PQclear(result); + } if (keyid > 0xFFFFFFFF) { snprintf(statement, 1023, - "SELECT keydata FROM onak_keys WHERE keyid = '%llX'", + "SELECT keydata FROM onak_keys WHERE keyid = '%" + PRIX64 "'", keyid); } else { snprintf(statement, 1023, "SELECT keydata FROM onak_keys WHERE keyid " - "LIKE '%%%llX'", + "LIKE '%%%" PRIX64 "'", keyid); } result = PQexec(dbconn, statement); @@ -132,22 +180,27 @@ int fetch_key(uint64_t keyid, struct openpgp_publickey **publickey) fd = lo_open(dbconn, key_oid, INV_READ); if (fd < 0) { - fprintf(stderr, "Can't open large object.\n"); + logthing(LOGTHING_ERROR, + "Can't open large object."); } else { read_openpgp_stream(keydb_fetchchar, &fd, - &packets); + &packets, 0); parse_keys(packets, publickey); lo_close(dbconn, fd); + free_packet_list(packets); + packets = NULL; } } } else if (PQresultStatus(result) != PGRES_TUPLES_OK) { - fprintf(stderr, "Problem retrieving key from DB.\n"); + logthing(LOGTHING_ERROR, "Problem retrieving key from DB."); } PQclear(result); - result = PQexec(dbconn, "COMMIT"); - PQclear(result); + if (!intrans) { + result = PQexec(dbconn, "COMMIT"); + PQclear(result); + } return (numkeys); } @@ -159,7 +212,8 @@ int fetch_key(uint64_t keyid, struct openpgp_publickey **publickey) * This function searches for the supplied text and returns the keys that * contain it. */ -int fetch_key_text(const char *search, struct openpgp_publickey **publickey) +static int pg_fetch_key_text(const char *search, + struct openpgp_publickey **publickey) { struct openpgp_packet_list *packets = NULL; PGresult *result = NULL; @@ -169,34 +223,22 @@ int fetch_key_text(const char *search, struct openpgp_publickey **publickey) int i = 0; int numkeys = 0; Oid key_oid; - char *dodgychar = NULL; + char *newsearch = NULL; result = PQexec(dbconn, "BEGIN"); PQclear(result); - /* - * TODO: We really want to use PQescapeString, but this isn't supported - * by the version of Postgresql in Debian Stable. Roll on Woody and for - * now kludge it. - */ - dodgychar = strchr(search, '\''); - while (dodgychar != NULL) { - *dodgychar = ' '; - dodgychar = strchr(search, '\''); - } - dodgychar = strchr(search, '\\'); - while (dodgychar != NULL) { - *dodgychar = ' '; - dodgychar = strchr(search, '\\'); - } - - + newsearch = malloc(strlen(search) * 2 + 1); + memset(newsearch, 0, strlen(search) * 2 + 1); + PQescapeStringConn(dbconn, newsearch, search, strlen(search), NULL); snprintf(statement, 1023, "SELECT DISTINCT onak_keys.keydata FROM onak_keys, " "onak_uids WHERE onak_keys.keyid = onak_uids.keyid " "AND onak_uids.uid LIKE '%%%s%%'", - search); + newsearch); result = PQexec(dbconn, statement); + free(newsearch); + newsearch = NULL; if (PQresultStatus(result) == PGRES_TUPLES_OK) { numkeys = PQntuples(result); @@ -206,16 +248,20 @@ int fetch_key_text(const char *search, struct openpgp_publickey **publickey) fd = lo_open(dbconn, key_oid, INV_READ); if (fd < 0) { - fprintf(stderr, "Can't open large object.\n"); + logthing(LOGTHING_ERROR, + "Can't open large object."); } else { read_openpgp_stream(keydb_fetchchar, &fd, - &packets); + &packets, + 0); parse_keys(packets, publickey); lo_close(dbconn, fd); + free_packet_list(packets); + packets = NULL; } } } else if (PQresultStatus(result) != PGRES_TUPLES_OK) { - fprintf(stderr, "Problem retrieving key from DB.\n"); + logthing(LOGTHING_ERROR, "Problem retrieving key from DB."); } PQclear(result); @@ -225,29 +271,112 @@ int fetch_key_text(const char *search, struct openpgp_publickey **publickey) return (numkeys); } +/** + * delete_key - Given a keyid delete the key from storage. + * @keyid: The keyid to delete. + * @intrans: If we're already in a transaction. + * + * This function deletes a public key from whatever storage mechanism we + * are using. Returns 0 if the key existed. + */ +static int pg_delete_key(uint64_t keyid, bool intrans) +{ + PGresult *result = NULL; + char *oids = NULL; + char statement[1024]; + int found = 1; + int i; + Oid key_oid; + + if (!intrans) { + result = PQexec(dbconn, "BEGIN"); + PQclear(result); + } + + snprintf(statement, 1023, + "SELECT keydata FROM onak_keys WHERE keyid = '%" + PRIX64 "'", + keyid); + result = PQexec(dbconn, statement); + + if (PQresultStatus(result) == PGRES_TUPLES_OK) { + found = 0; + i = PQntuples(result); + while (i > 0) { + oids = PQgetvalue(result, i-1, 0); + key_oid = (Oid) atoi(oids); + lo_unlink(dbconn, key_oid); + i--; + } + PQclear(result); + + snprintf(statement, 1023, + "DELETE FROM onak_keys WHERE keyid = '%" PRIX64 "'", + keyid); + result = PQexec(dbconn, statement); + PQclear(result); + + snprintf(statement, 1023, + "DELETE FROM onak_sigs WHERE signee = '%" PRIX64 "'", + keyid); + result = PQexec(dbconn, statement); + PQclear(result); + + snprintf(statement, 1023, + "DELETE FROM onak_uids WHERE keyid = '%" PRIX64 "'", + keyid); + result = PQexec(dbconn, statement); + } else if (PQresultStatus(result) != PGRES_TUPLES_OK) { + logthing(LOGTHING_ERROR, + "Problem retrieving key (%" PRIX64 + ") from DB.", + keyid); + } + + PQclear(result); + + if (!intrans) { + result = PQexec(dbconn, "COMMIT"); + PQclear(result); + } + return (found); +} + /** * store_key - Takes a key and stores it. * @publickey: A pointer to the public key to store. + * @intrans: If we're already in a transaction. + * @update: If true the key exists and should be updated. * * Again we just use the hex representation of the keyid as the filename * to store the key to. We flatten the public key to a list of OpenPGP * packets and then use write_openpgp_stream() to write the stream out to - * the file. + * the file. If update is true then we delete the old key first, otherwise + * we trust that it doesn't exist. */ -int store_key(struct openpgp_publickey *publickey) +static int pg_store_key(struct openpgp_publickey *publickey, bool intrans, + bool update) { struct openpgp_packet_list *packets = NULL; struct openpgp_packet_list *list_end = NULL; struct openpgp_publickey *next = NULL; + struct openpgp_signedpacket_list *curuid = NULL; PGresult *result = NULL; char statement[1024]; Oid key_oid; int fd; char **uids = NULL; char *primary = NULL; - char *dodgychar = NULL; + char *safeuid = NULL; int i; + uint64_t keyid; + + if (!intrans) { + result = PQexec(dbconn, "BEGIN"); + PQclear(result); + } + get_keyid(publickey, &keyid); /* * Delete the key if we already have it. @@ -257,10 +386,9 @@ int store_key(struct openpgp_publickey *publickey) * of difference though - the largest chunk of data is the keydata and * it definitely needs updated. */ - delete_key(get_keyid(publickey)); - - result = PQexec(dbconn, "BEGIN"); - PQclear(result); + if (update) { + pg_delete_key(keyid, true); + } next = publickey->next; publickey->next = NULL; @@ -269,56 +397,58 @@ int store_key(struct openpgp_publickey *publickey) key_oid = lo_creat(dbconn, INV_READ | INV_WRITE); if (key_oid == 0) { - fprintf(stderr, "Can't create key OID\n"); + logthing(LOGTHING_ERROR, "Can't create key OID"); } else { fd = lo_open(dbconn, key_oid, INV_WRITE); write_openpgp_stream(keydb_putchar, &fd, packets); lo_close(dbconn, fd); } + free_packet_list(packets); + packets = NULL; snprintf(statement, 1023, "INSERT INTO onak_keys (keyid, keydata) VALUES " - "('%llX', '%d')", - get_keyid(publickey), + "('%" PRIX64 "', '%d')", + keyid, key_oid); result = PQexec(dbconn, statement); if (PQresultStatus(result) != PGRES_COMMAND_OK) { - fprintf(stderr, "Problem storing key in DB.\n"); - fprintf(stderr, "%s\n", PQresultErrorMessage(result)); + logthing(LOGTHING_ERROR, "Problem storing key in DB."); + logthing(LOGTHING_ERROR, "%s", PQresultErrorMessage(result)); } PQclear(result); uids = keyuids(publickey, &primary); if (uids != NULL) { for (i = 0; uids[i] != NULL; i++) { - /* - * TODO: We really want to use PQescapeString, but this - * isn't supported by the version of Postgresql in - * Debian Stable. Roll on Woody and for now kludge it. - */ - dodgychar = strchr(uids[i], '\''); - while (dodgychar != NULL) { - *dodgychar = ' '; - dodgychar = strchr(uids[i], '\''); + safeuid = malloc(strlen(uids[i]) * 2 + 1); + if (safeuid != NULL) { + memset(safeuid, 0, strlen(uids[i]) * 2 + 1); + PQescapeStringConn(dbconn, safeuid, uids[i], + strlen(uids[i]), NULL); + + snprintf(statement, 1023, + "INSERT INTO onak_uids " + "(keyid, uid, pri) " + "VALUES ('%" PRIX64 "', '%s', '%c')", + keyid, + safeuid, + (uids[i] == primary) ? 't' : 'f'); + result = PQexec(dbconn, statement); + + free(safeuid); + safeuid = NULL; } - dodgychar = strchr(uids[i], '\\'); - while (dodgychar != NULL) { - *dodgychar = ' '; - dodgychar = strchr(uids[i], '\\'); + if (uids[i] != NULL) { + free(uids[i]); + uids[i] = NULL; } - snprintf(statement, 1023, - "INSERT INTO onak_uids (keyid, uid, pri) " - "VALUES ('%llX', '%s', '%c')", - get_keyid(publickey), - uids[i], - (uids[i] == primary) ? 't' : 'f'); - result = PQexec(dbconn, statement); - if (PQresultStatus(result) != PGRES_COMMAND_OK) { - fprintf(stderr, "Problem storing key in DB.\n"); - fprintf(stderr, "%s\n", + logthing(LOGTHING_ERROR, + "Problem storing key in DB."); + logthing(LOGTHING_ERROR, "%s", PQresultErrorMessage(result)); } /* @@ -326,108 +456,217 @@ int store_key(struct openpgp_publickey *publickey) */ PQclear(result); } + free(uids); + uids = NULL; } - result = PQexec(dbconn, "COMMIT"); - PQclear(result); + for (curuid = publickey->uids; curuid != NULL; curuid = curuid->next) { + for (packets = curuid->sigs; packets != NULL; + packets = packets->next) { + snprintf(statement, 1023, + "INSERT INTO onak_sigs (signer, signee) " + "VALUES ('%" PRIX64 "', '%" PRIX64 "')", + sig_keyid(packets->packet), + keyid); + result = PQexec(dbconn, statement); + PQclear(result); + } + } + + if (!intrans) { + result = PQexec(dbconn, "COMMIT"); + PQclear(result); + } return 0; } /** - * delete_key - Given a keyid delete the key from storage. - * @keyid: The keyid to delete. - * - * This function deletes a public key from whatever storage mechanism we - * are using. Returns 0 if the key existed. + * keyid2uid - Takes a keyid and returns the primary UID for it. + * @keyid: The keyid to lookup. */ -int delete_key(uint64_t keyid) +static char *pg_keyid2uid(uint64_t keyid) { PGresult *result = NULL; - char *oids = NULL; char statement[1024]; - int found = 1; - int i; - Oid key_oid; + char *uid = NULL; - result = PQexec(dbconn, "BEGIN"); - PQclear(result); - snprintf(statement, 1023, - "SELECT keydata FROM onak_keys WHERE keyid = '%llX'", - keyid); + "SELECT uid FROM onak_uids WHERE keyid = '%" PRIX64 + "' AND pri = 't'", + keyid); result = PQexec(dbconn, statement); - if (PQresultStatus(result) == PGRES_TUPLES_OK) { - found = 0; - i = PQntuples(result); - while (i > 0) { - oids = PQgetvalue(result, i-1, 0); - key_oid = (Oid) atoi(oids); - lo_unlink(dbconn, key_oid); - i--; - } - PQclear(result); - - snprintf(statement, 1023, - "DELETE FROM onak_keys WHERE keyid = '%llX'", - keyid); - result = PQexec(dbconn, statement); - PQclear(result); - - snprintf(statement, 1023, - "DELETE FROM onak_uids WHERE keyid = '%llX'", - keyid); - result = PQexec(dbconn, statement); + /* + * Technically we only expect one response to the query; a key only has + * one primary ID. Better to return something than nothing though. + * + * TODO: Log if we get more than one response? Needs logging framework + * first though. + */ + if (PQresultStatus(result) == PGRES_TUPLES_OK && + PQntuples(result) >= 1) { + uid = strdup(PQgetvalue(result, 0, 0)); } else if (PQresultStatus(result) != PGRES_TUPLES_OK) { - fprintf(stderr, "Problem retrieving key (%llX) from DB.\n", + logthing(LOGTHING_ERROR, + "Problem retrieving key (%" PRIX64 + ") from DB.", keyid); } PQclear(result); - result = PQexec(dbconn, "COMMIT"); - PQclear(result); - return (found); + return uid; } /** - * keyid2uid - Takes a keyid and returns the primary UID for it. - * @keyid: The keyid to lookup. + * getkeysigs - Gets a linked list of the signatures on a key. + * @keyid: The keyid to get the sigs for. + * @revoked: If the key is revoked. + * + * This function gets the list of signatures on a key. Used for key + * indexing and doing stats bits. */ -char *keyid2uid(uint64_t keyid) +static struct ll *pg_getkeysigs(uint64_t keyid, bool *revoked) { + struct ll *sigs = NULL; PGresult *result = NULL; + uint64_t signer; char statement[1024]; - char *uid = NULL; + int i, j; + int numsigs = 0; + bool intrans = false; + char *str; + + if (!intrans) { + result = PQexec(dbconn, "BEGIN"); + PQclear(result); + } snprintf(statement, 1023, - "SELECT uid FROM onak_uids WHERE keyid = '%llX' AND pri = 't'", + "SELECT DISTINCT signer FROM onak_sigs WHERE signee = '%" + PRIX64 "'", keyid); result = PQexec(dbconn, statement); + if (PQresultStatus(result) == PGRES_TUPLES_OK) { + numsigs = PQntuples(result); + for (i = 0; i < numsigs; i++) { + j = 0; + signer = 0; + str = PQgetvalue(result, i, 0); + while (str[j] != 0) { + signer <<= 4; + if (str[j] >= '0' && str[j] <= '9') { + signer += str[j] - '0'; + } else { + signer += str[j] - 'A' + 10; + } + j++; + } + sigs = lladd(sigs, createandaddtohash(signer)); + } + } else if (PQresultStatus(result) != PGRES_TUPLES_OK) { + logthing(LOGTHING_ERROR, "Problem retrieving key from DB."); + } + + PQclear(result); + + if (!intrans) { + result = PQexec(dbconn, "COMMIT"); + PQclear(result); + } + /* - * Technically we only expect one response to the query; a key only has - * one primary ID. Better to return something than nothing though. - * - * TODO: Log if we get more than one response? Needs logging framework - * first though. + * TODO: What do we do about revocations? We don't have the details + * stored in a separate table, so we'd have to grab the key and decode + * it, which we're trying to avoid by having a signers table. */ - if (PQresultStatus(result) == PGRES_TUPLES_OK && - PQntuples(result) >= 1) { - uid = strdup(PQgetvalue(result, 0, 0)); + if (revoked != NULL) { + *revoked = false; + } + + return sigs; +} + +/** + * iterate_keys - call a function once for each key in the db. + * @iterfunc: The function to call. + * @ctx: A context pointer + * + * Calls iterfunc once for each key in the database. ctx is passed + * unaltered to iterfunc. This function is intended to aid database dumps + * and statistic calculations. + * + * Returns the number of keys we iterated over. + */ +static int pg_iterate_keys(void (*iterfunc)(void *ctx, + struct openpgp_publickey *key), void *ctx) +{ + struct openpgp_packet_list *packets = NULL; + struct openpgp_publickey *key = NULL; + PGresult *result = NULL; + char *oids = NULL; + int fd = -1; + int i = 0; + int numkeys = 0; + Oid key_oid; + + result = PQexec(dbconn, "SELECT keydata FROM onak_keys;"); + + if (PQresultStatus(result) == PGRES_TUPLES_OK) { + numkeys = PQntuples(result); + for (i = 0; i < numkeys; i++) { + oids = PQgetvalue(result, i, 0); + key_oid = (Oid) atoi(oids); + + fd = lo_open(dbconn, key_oid, INV_READ); + if (fd < 0) { + logthing(LOGTHING_ERROR, + "Can't open large object."); + } else { + read_openpgp_stream(keydb_fetchchar, &fd, + &packets, 0); + parse_keys(packets, &key); + lo_close(dbconn, fd); + + iterfunc(ctx, key); + + free_publickey(key); + key = NULL; + free_packet_list(packets); + packets = NULL; + } + } } else if (PQresultStatus(result) != PGRES_TUPLES_OK) { - fprintf(stderr, "Problem retrieving key (%llX) from DB.\n", - keyid); + logthing(LOGTHING_ERROR, "Problem retrieving key from DB."); } PQclear(result); - return uid; + return (numkeys); } /* * Include the basic keydb routines. */ -#define NEED_GETKEYSIGS 1 +#define NEED_GETFULLKEYID 1 +#define NEED_UPDATEKEYS 1 #include "keydb.c" + +struct dbfuncs keydb_pg_funcs = { + .initdb = pg_initdb, + .cleanupdb = pg_cleanupdb, + .starttrans = pg_starttrans, + .endtrans = pg_endtrans, + .fetch_key = pg_fetch_key, + .fetch_key_text = pg_fetch_key_text, + .store_key = pg_store_key, + .update_keys = generic_update_keys, + .delete_key = pg_delete_key, + .getkeysigs = pg_getkeysigs, + .cached_getkeysigs = generic_cached_getkeysigs, + .keyid2uid = pg_keyid2uid, + .getfullkeyid = generic_getfullkeyid, + .iterate_keys = pg_iterate_keys, +};