X-Git-Url: https://arthur.barton.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=etc%2Fafpd%2Fvolume.c;h=a012dcd82eb38010d363ec5aee9a279ea8919c18;hb=745c25530d830676a2323835545b641a7ff9c59c;hp=03bc2be29375ee6bc5b7ded62236848688144c3a;hpb=1575c0ad7f67747019a3eb550d942406daa87d6e;p=netatalk.git diff --git a/etc/afpd/volume.c b/etc/afpd/volume.c index 03bc2be2..a012dcd8 100644 --- a/etc/afpd/volume.c +++ b/etc/afpd/volume.c @@ -35,6 +35,7 @@ char *strchr (), *strrchr (); #include #include #include + #include #include #include @@ -43,7 +44,10 @@ char *strchr (), *strrchr (); #include #include #include -#include +#include +#include +#include + #ifdef CNID_DB #include #endif /* CNID_DB*/ @@ -56,6 +60,7 @@ char *strchr (), *strrchr (); #include "mangle.h" #include "fork.h" #include "hash.h" +#include "acls.h" extern int afprun(int root, char *cmd, int *outfd); @@ -63,16 +68,12 @@ extern int afprun(int root, char *cmd, int *outfd); #define MIN(a, b) ((a) < (b) ? (a) : (b)) #endif /* ! MIN */ -#ifndef NO_LARGE_VOL_SUPPORT -#if BYTE_ORDER == BIG_ENDIAN -#define hton64(x) (x) -#define ntoh64(x) (x) -#else /* BYTE_ORDER == BIG_ENDIAN */ -#define hton64(x) ((u_int64_t) (htonl(((x) >> 32) & 0xffffffffLL)) | \ - (u_int64_t) ((htonl(x) & 0xffffffffLL) << 32)) -#define ntoh64(x) (hton64(x)) -#endif /* BYTE_ORDER == BIG_ENDIAN */ -#endif /* ! NO_LARGE_VOL_SUPPORT */ +#ifndef UUID_PRINTABLE_STRING_LENGTH +#define UUID_PRINTABLE_STRING_LENGTH 37 +#endif + +/* Globals */ +struct vol *current_vol; /* last volume from getvolbyvid() */ static struct vol *Volumes = NULL; static u_int16_t lastvid = 0; @@ -154,6 +155,8 @@ static void handle_special_folders (const struct vol *); static void deletevol(struct vol *vol); static void volume_free(struct vol *vol); static void check_ea_sys_support(struct vol *vol); +static char *get_vol_uuid(const AFPObj *obj, const char *volname); +static int readvolfile(AFPObj *obj, struct afp_volume_name *p1,char *p2, int user, struct passwd *pwent); static void volfree(struct vol_option *options, const struct vol_option *save) { @@ -173,7 +176,10 @@ static void volfree(struct vol_option *options, const struct vol_option *save) } -/* handle variable substitutions. here's what we understand: +#define is_var(a, b) (strncmp((a), (b), 2) == 0) + +/* + * Handle variable substitutions. here's what we understand: * $b -> basename of path * $c -> client ip/appletalk address * $d -> volume pathname on server @@ -187,17 +193,37 @@ static void volfree(struct vol_option *options, const struct vol_option *save) * $z -> zone (may not exist) * $$ -> $ * + * This get's called from readvolfile with + * path = NULL, volname = NULL for xlating the volumes path + * path = path, volname = NULL for xlating the volumes name + * ... and from volumes options parsing code when xlating eg dbpath with + * path = path, volname = volname * + * Using this information we can reject xlation of any variable depeninding on a login + * context which is not given in the afp master, where we must evaluate this whole stuff + * too for the Zeroconf announcements. */ -#define is_var(a, b) (strncmp((a), (b), 2) == 0) - -static char *volxlate(AFPObj *obj, char *dest, size_t destlen, - char *src, struct passwd *pwd, char *path, char *volname) +static char *volxlate(AFPObj *obj, + char *dest, + size_t destlen, + char *src, + struct passwd *pwd, + char *path, + char *volname) { char *p, *r; const char *q; int len; char *ret; + int afpmaster = 0; + int xlatevolname = 0; + + if (parent_or_child == 0) + afpmaster = 1; + + if (path && !volname) + /* cf above */ + xlatevolname = 1; if (!src) { return NULL; @@ -224,6 +250,8 @@ static char *volxlate(AFPObj *obj, char *dest, size_t destlen, /* now figure out what the variable is */ q = NULL; if (is_var(p, "$b")) { + if (afpmaster && xlatevolname) + return NULL; if (path) { if ((q = strrchr(path, '/')) == NULL) q = path; @@ -231,6 +259,8 @@ static char *volxlate(AFPObj *obj, char *dest, size_t destlen, q++; } } else if (is_var(p, "$c")) { + if (afpmaster && xlatevolname) + return NULL; if (obj->proto == AFPPROTO_ASP) { ASP asp = obj->handle; @@ -248,18 +278,26 @@ static char *volxlate(AFPObj *obj, char *dest, size_t destlen, destlen -= len; } } else if (is_var(p, "$d")) { + if (afpmaster && xlatevolname) + return NULL; q = path; - } else if (is_var(p, "$f")) { + } else if (pwd && is_var(p, "$f")) { + if (afpmaster && xlatevolname) + return NULL; if ((r = strchr(pwd->pw_gecos, ','))) *r = '\0'; q = pwd->pw_gecos; - } else if (is_var(p, "$g")) { + } else if (pwd && is_var(p, "$g")) { + if (afpmaster && xlatevolname) + return NULL; struct group *grp = getgrgid(pwd->pw_gid); if (grp) q = grp->gr_name; } else if (is_var(p, "$h")) { q = obj->options.hostname; } else if (is_var(p, "$i")) { + if (afpmaster && xlatevolname) + return NULL; if (obj->proto == AFPPROTO_ASP) { ASP asp = obj->handle; @@ -278,13 +316,17 @@ static char *volxlate(AFPObj *obj, char *dest, size_t destlen, q = obj->options.server; } else q = obj->options.hostname; - } else if (is_var(p, "$u")) { + } else if (obj->username && is_var(p, "$u")) { + if (afpmaster && xlatevolname) + return NULL; char* sep = NULL; if ( obj->options.ntseparator && (sep = strchr(obj->username, obj->options.ntseparator[0])) != NULL) q = sep+1; else q = obj->username; } else if (is_var(p, "$v")) { + if (afpmaster && xlatevolname) + return NULL; if (volname) { q = volname; } @@ -445,8 +487,6 @@ static void volset(struct vol_option *options, struct vol_option *save, options[VOLOPT_ROOTPREEXEC].i_value = 1; else if (strcasecmp(p, "upriv") == 0) options[VOLOPT_FLAGS].i_value |= AFPVOL_UNIX_PRIV; - else if (strcasecmp(p, "acls") == 0) - options[VOLOPT_FLAGS].i_value |= AFPVOL_ACLS; else if (strcasecmp(p, "nodev") == 0) options[VOLOPT_FLAGS].i_value |= AFPVOL_NODEV; else if (strcasecmp(p, "caseinsensitive") == 0) @@ -457,6 +497,8 @@ static void volset(struct vol_option *options, struct vol_option *save, options[VOLOPT_FLAGS].i_value &= ~AFPVOL_CACHE; else if (strcasecmp(p, "tm") == 0) options[VOLOPT_FLAGS].i_value |= AFPVOL_TM; + else if (strcasecmp(p, "searchdb") == 0) + options[VOLOPT_FLAGS].i_value |= AFPVOL_SEARCHDB; /* Found this in branch dir-rewrite, maybe we want to use it sometimes */ #if 0 else if (strcasecmp(p, "cdrom") == 0) @@ -563,6 +605,8 @@ static int creatvol(AFPObj *obj, struct passwd *pwd, char suffix[6]; /* max is #FFFF */ u_int16_t flags; + LOG(log_debug, logtype_afpd, "createvol: Volume '%s'", name); + if ( name == NULL || *name == '\0' ) { if ((name = strrchr( path, '/' )) == NULL) { return -1; /* Obviously not a fully qualified path */ @@ -603,7 +647,7 @@ static int creatvol(AFPObj *obj, struct passwd *pwd, if ( 0 >= ( u8mvlen = convert_string(CH_UTF8_MAC, CH_UCS2, tmpname, tmpvlen, u8mtmpname, AFPVOL_U8MNAMELEN*2)) ) return -1; - LOG(log_debug, logtype_afpd, "createvol: Volume '%s' -> UTF8-MAC Name: '%s'", name, tmpname); + LOG(log_maxdebug, logtype_afpd, "createvol: Volume '%s' -> UTF8-MAC Name: '%s'", name, tmpname); /* Maccharset Volume Name */ /* Firsty convert name from unixcharset to maccharset */ @@ -629,11 +673,12 @@ static int creatvol(AFPObj *obj, struct passwd *pwd, if ( 0 >= ( macvlen = convert_string(obj->options.maccharset, CH_UCS2, tmpname, tmpvlen, mactmpname, AFPVOL_U8MNAMELEN*2)) ) return -1; - LOG(log_debug, logtype_afpd, "createvol: Volume '%s' -> Longname: '%s'", name, tmpname); + LOG(log_maxdebug, logtype_afpd, "createvol: Volume '%s' -> Longname: '%s'", name, tmpname); /* check duplicate */ for ( volume = Volumes; volume; volume = volume->v_next ) { if (( strcasecmp_w( volume->v_u8mname, u8mtmpname ) == 0 ) || ( strcasecmp_w( volume->v_macname, mactmpname ) == 0 )){ + LOG (log_error, logtype_afpd, "ERROR: Volume name is duplicated. Check AppleVolumes files."); if (volume->v_deleted) { volume->v_new = hide = 1; } @@ -682,14 +727,16 @@ static int creatvol(AFPObj *obj, struct passwd *pwd, /* os X start at 1 and use network order ie. 1 2 3 */ volume->v_vid = ++lastvid; volume->v_vid = htons(volume->v_vid); +#ifdef HAVE_ACLS + if (check_vol_acl_support(volume)) + volume->v_flags |= AFPVOL_ACLS +; +#endif /* handle options */ if (options) { - /* should we casefold? */ volume->v_casefold = options[VOLOPT_CASEFOLD].i_value; - - /* shift in some flags */ - volume->v_flags = options[VOLOPT_FLAGS].i_value; + volume->v_flags |= options[VOLOPT_FLAGS].i_value; if (options[VOLOPT_EA_VFS].i_value) volume->v_vfs_ea = options[VOLOPT_EA_VFS].i_value; @@ -811,6 +858,19 @@ static int creatvol(AFPObj *obj, struct passwd *pwd, check_ea_sys_support(volume); initvol_vfs(volume); + /* get/store uuid from file */ + if (volume->v_flags & AFPVOL_TM) { + char *uuid = get_vol_uuid(obj, volume->v_localname); + if (!uuid) { + LOG(log_error, logtype_afpd, "Volume '%s': couldn't get UUID", + volume->v_localname); + } else { + volume->v_uuid = uuid; + LOG(log_debug, logtype_afpd, "Volume '%s': UUID '%s'", + volume->v_localname, volume->v_uuid); + } + } + volume->v_next = Volumes; Volumes = volume; return 0; @@ -1078,7 +1138,10 @@ static int volfile_changed(struct afp_volume_name *p) /* ---------------------- * Read a volume configuration file and add the volumes contained within to - * the global volume list. If p2 is non-NULL, the file that is opened is + * the global volume list. This gets called from the forked afpd childs. + * The master now reads this too for Zeroconf announcements. + * + * If p2 is non-NULL, the file that is opened is * p1/p2 * * Lines that begin with # and blank lines are ignored. @@ -1086,6 +1149,7 @@ static int volfile_changed(struct afp_volume_name *p) * [] [allow:,<@group>,...] \ * [codepage:] [casefold:] * TYPE [CREATOR] + * */ static int readvolfile(AFPObj *obj, struct afp_volume_name *p1, char *p2, int user, struct passwd *pwent) { @@ -1096,12 +1160,12 @@ static int readvolfile(AFPObj *obj, struct afp_volume_name *p1, char *p2, int us char buf[BUFSIZ]; char type[5], creator[5]; char *u, *p; + int fd; + int i; struct passwd *pw; struct vol_option save_options[VOLOPT_NUM]; struct vol_option options[VOLOPT_NUM]; - int i; struct stat st; - int fd; if (!p1->name) return -1; @@ -1124,6 +1188,14 @@ static int readvolfile(AFPObj *obj, struct afp_volume_name *p1, char *p2, int us p1->mtime = st.st_mtime; } + if ((read_lock(fd, 0, SEEK_SET, 0)) != 0) { + LOG(log_error, logtype_afpd, "readvolfile: can't lock volume file \"%s\"", path); + if ( fclose( fp ) != 0 ) { + LOG(log_error, logtype_afpd, "readvolfile: fclose: %s", strerror(errno) ); + } + return -1; + } + memset(save_options, 0, sizeof(save_options)); /* Enable some default options for all volumes */ @@ -1133,6 +1205,8 @@ static int readvolfile(AFPObj *obj, struct afp_volume_name *p1, char *p2, int us obj->options.umask); save_options[VOLOPT_UMASK].i_value = obj->options.umask; + LOG(log_debug, logtype_afpd, "readvolfile: \"%s\"", path); + while ( myfgets( buf, sizeof( buf ), fp ) != NULL ) { initline( strlen( buf ), buf ); parseline( sizeof( path ) - 1, path ); @@ -1178,29 +1252,16 @@ static int readvolfile(AFPObj *obj, struct afp_volume_name *p1, char *p2, int us /* send path through variable substitution */ if (*path != '~') /* need to copy path to tmp */ strcpy(tmp, path); - if (!pwent) + if (!pwent && obj->username) pwent = getpwnam(obj->username); - volxlate(obj, path, sizeof(path) - 1, tmp, pwent, NULL, NULL); + + if (volxlate(obj, path, sizeof(path) - 1, tmp, pwent, NULL, NULL) == NULL) + continue; /* this is sort of braindead. basically, i want to be * able to specify things in any order, but i don't want to - * re-write everything. - * - * currently we have options: - * volname - * codepage:x - * casefold:x - * allow:x,y,@z - * deny:x,y,@z - * rwlist:x,y,@z - * rolist:x,y,@z - * options:prodos,crlf,noadouble,ro... - * dbpath:x - * password:x - * preexec:x - * - * namemask:x,y,!z (not implemented yet) - */ + * re-write everything. */ + memcpy(options, save_options, sizeof(options)); *volname = '\0'; @@ -1212,27 +1273,32 @@ static int readvolfile(AFPObj *obj, struct afp_volume_name *p1, char *p2, int us volset(options, save_options, volname, sizeof(volname) - 1, tmp); } - /* check allow/deny lists: + /* check allow/deny lists (if not afpd master loading volumes for Zeroconf reg.): allow -> either no list (-1), or in list (1) deny -> either no list (-1), or not in list (0) */ - if (accessvol(options[VOLOPT_ALLOW].c_value, obj->username) && - (accessvol(options[VOLOPT_DENY].c_value, obj->username) < 1) && - hostaccessvol(VOLOPT_ALLOWED_HOSTS, volname, options[VOLOPT_ALLOWED_HOSTS].c_value, obj) && - (hostaccessvol(VOLOPT_DENIED_HOSTS, volname, options[VOLOPT_DENIED_HOSTS].c_value, obj) < 1)) { + if (parent_or_child == 0 + || + (accessvol(options[VOLOPT_ALLOW].c_value, obj->username) && + (accessvol(options[VOLOPT_DENY].c_value, obj->username) < 1) && + hostaccessvol(VOLOPT_ALLOWED_HOSTS, volname, options[VOLOPT_ALLOWED_HOSTS].c_value, obj) && + (hostaccessvol(VOLOPT_DENIED_HOSTS, volname, options[VOLOPT_DENIED_HOSTS].c_value, obj) < 1))) { /* handle read-only behaviour. semantics: * 1) neither the rolist nor the rwlist exist -> rw * 2) rolist exists -> ro if user is in it. * 3) rwlist exists -> ro unless user is in it. */ - if (((options[VOLOPT_FLAGS].i_value & AFPVOL_RO) == 0) && - ((accessvol(options[VOLOPT_ROLIST].c_value, - obj->username) == 1) || - !accessvol(options[VOLOPT_RWLIST].c_value, - obj->username))) + if (parent_or_child == 1 + && + ((options[VOLOPT_FLAGS].i_value & AFPVOL_RO) == 0) + && + ((accessvol(options[VOLOPT_ROLIST].c_value, obj->username) == 1) || + !accessvol(options[VOLOPT_RWLIST].c_value, obj->username))) options[VOLOPT_FLAGS].i_value |= AFPVOL_RO; /* do variable substitution for volname */ - volxlate(obj, tmp, sizeof(tmp) - 1, volname, pwent, path, NULL); + if (volxlate(obj, tmp, sizeof(tmp) - 1, volname, pwent, path, NULL) == NULL) + continue; + creatvol(obj, pwent, path, tmp, options, p2 != NULL); } volfree(options, save_options); @@ -1278,6 +1344,8 @@ static void volume_free(struct vol *vol) free(vol->v_forceuid); free(vol->v_forcegid); #endif /* FORCE_UIDGID */ + if (vol->v_uuid) + free(vol->v_uuid); } /* ------------------------------- */ @@ -1379,10 +1447,45 @@ static int getvolspace(struct vol *vol, getvolspace_done: if (vol->v_limitsize) { - /* FIXME: Free could be limit minus (total minus used), */ - /* which will confuse the client less ? */ - *xbfree = min(*xbfree, (vol->v_limitsize * 1024 * 1024)); + bstring cmdstr; + if ((cmdstr = bformat("du -sh \"%s\" 2> /dev/null | cut -f1", vol->v_path)) == NULL) + return AFPERR_MISC; + + FILE *cmd = popen(cfrombstr(cmdstr), "r"); + bdestroy(cmdstr); + if (cmd == NULL) + return AFPERR_MISC; + + char buf[100]; + fgets(buf, 100, cmd); + + if (pclose(cmd) == -1) + return AFPERR_MISC; + + size_t multi = 0; + if (buf[strlen(buf) - 2] == 'G' || buf[strlen(buf) - 2] == 'g') + /* GB */ + multi = 1024 * 1024 * 1024; + else if (buf[strlen(buf) - 2] == 'M' || buf[strlen(buf) - 2] == 'm') + /* MB */ + multi = 1024 * 1024; + else if (buf[strlen(buf) - 2] == 'K' || buf[strlen(buf) - 2] == 'k') + /* MB */ + multi = 1024; + + char *p; + if (p = strchr(buf, ',')) + /* ignore fraction */ + *p = 0; + else + /* remove G|M|K char */ + buf[strlen(buf) - 2] = 0; + /* now buf contains only digits */ + long long used = atoll(buf) * multi; + LOG(log_debug, logtype_afpd, "volparams: used on volume: %llu bytes", used); + *xbtotal = min(*xbtotal, (vol->v_limitsize * 1024 * 1024)); + *xbfree = min(*xbfree, *xbtotal < used ? 0 : *xbtotal - used); } *bfree = min( *xbfree, maxsize); @@ -1673,6 +1776,12 @@ void load_volumes(AFPObj *obj) free_volumes(); } + if (parent_or_child == 0) { + LOG(log_debug, logtype_afpd, "load_volumes: AFP MASTER"); + } else { + LOG(log_debug, logtype_afpd, "load_volumes: user: %s", obj->username); + } + pwent = getpwnam(obj->username); if ( (obj->options.flags & OPTION_USERVOLFIRST) == 0 ) { readvolfile(obj, &obj->options.systemvol, NULL, 0, pwent); @@ -1844,7 +1953,7 @@ static int volume_openDB(struct vol *volume) LOG(log_info, logtype_afpd, "CNID server: %s:%s", volume->v_cnidserver ? volume->v_cnidserver : Cnid_srv, volume->v_cnidport ? volume->v_cnidport : Cnid_port); - + #if 0 /* Found this in branch dir-rewrite, maybe we want to use it sometimes */ @@ -1867,7 +1976,7 @@ static int volume_openDB(struct vol *volume) } #endif - volume->v_cdb = cnid_open(volume->v_dbpath ? volume->v_dbpath : volume->v_path, + volume->v_cdb = cnid_open(volume->v_path, volume->v_umask, volume->v_cnidscheme, flags, @@ -1897,11 +2006,11 @@ static int volume_openDB(struct vol *volume) return (!volume->v_cdb)?-1:0; } -/* - Check if the underlying filesystem supports EAs for ea:sys volumes. - If not, switch to ea:ad. - As we can't check (requires write access) on ro-volumes, we switch ea:auto - volumes that are options:ro to ea:none. +/* + Check if the underlying filesystem supports EAs for ea:sys volumes. + If not, switch to ea:ad. + As we can't check (requires write access) on ro-volumes, we switch ea:auto + volumes that are options:ro to ea:none. */ static void check_ea_sys_support(struct vol *vol) { @@ -1912,7 +2021,7 @@ static void check_ea_sys_support(struct vol *vol) if (vol->v_vfs_ea == AFPVOL_EA_AUTO) { if ((vol->v_flags & AFPVOL_RO) == AFPVOL_RO) { - LOG(log_info, logtype_logger, "read-only volume '%s', can't test for EA support, disabling EAs", vol->v_localname); + LOG(log_info, logtype_afpd, "read-only volume '%s', can't test for EA support, disabling EAs", vol->v_localname); vol->v_vfs_ea = AFPVOL_EA_NONE; return; } @@ -1922,7 +2031,7 @@ static void check_ea_sys_support(struct vol *vol) process_uid = geteuid(); if (process_uid) if (seteuid(0) == -1) { - LOG(log_error, logtype_logger, "check_ea_sys_support: can't seteuid(0): %s", strerror(errno)); + LOG(log_error, logtype_afpd, "check_ea_sys_support: can't seteuid(0): %s", strerror(errno)); exit(EXITERR_SYS); } @@ -1937,7 +2046,7 @@ static void check_ea_sys_support(struct vol *vol) if (process_uid) { if (seteuid(process_uid) == -1) { - LOG(log_error, logtype_logger, "can't seteuid back %s", strerror(errno)); + LOG(log_error, logtype_afpd, "can't seteuid back %s", strerror(errno)); exit(EXITERR_SYS); } } @@ -2066,7 +2175,7 @@ int afp_openvol(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t if ((tmp = strdup(volume->v_path)) == NULL) { free(volume->v_path); return AFPERR_MISC; - } + } free(volume->v_path); volume->v_path = tmp; #endif @@ -2080,7 +2189,7 @@ int afp_openvol(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t * FIXME file size */ if (utf8_encoding()) { - volume->max_filename = 255; + volume->max_filename = UTF8FILELEN_EARLY; } else { volume->max_filename = MACFILELEN; @@ -2109,7 +2218,8 @@ int afp_openvol(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t volume, DIRDID_ROOT_PARENT, DIRDID_ROOT, - bfromcstr(volume->v_path)) + bfromcstr(volume->v_path), + st.st_ctime) ) == NULL) { free(vol_mname); LOG(log_error, logtype_afpd, "afp_openvol(%s): malloc: %s", volume->v_path, strerror(errno) ); @@ -2117,7 +2227,6 @@ int afp_openvol(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t goto openvol_err; } free(vol_mname); - volume->v_root = dir; curdir = dir; @@ -2254,6 +2363,7 @@ int afp_closevol(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_ } deletevol(vol); + current_vol = NULL; return( AFP_OK ); } @@ -2276,6 +2386,8 @@ struct vol *getvolbyvid(const u_int16_t vid ) set_uidgid ( vol ); #endif /* FORCE_UIDGID */ + current_vol = vol; + return( vol ); } @@ -2533,7 +2645,7 @@ static int create_special_folder (const struct vol *vol, const struct _special_f free(q); return (-1); } - + ad_setname(&ad, folder->name); ad_getattr(&ad, &attr); @@ -2567,3 +2679,111 @@ static void handle_special_folders (const struct vol * vol) } } +const struct vol *getvolumes(void) +{ + return Volumes; +} + +void unload_volumes_and_extmap(void) +{ + LOG(log_debug, logtype_afpd, "unload_volumes_and_extmap"); + free_extmap(); + free_volumes(); +} + +/* + * Get a volumes UUID from the config file. + * If there is none, it is generated and stored there. + * + * Returns pointer to allocated storage on success, NULL on error. + */ +static char *get_vol_uuid(const AFPObj *obj, const char *volname) +{ + char *volname_conf; + char buf[1024], uuid[UUID_PRINTABLE_STRING_LENGTH], *p; + FILE *fp; + struct stat tmpstat; + int fd; + + if ((fp = fopen(obj->options.uuidconf, "r")) != NULL) { /* read open? */ + /* scan in the conf file */ + while (fgets(buf, sizeof(buf), fp) != NULL) { + p = buf; + while (p && isblank(*p)) + p++; + if (!p || (*p == '#') || (*p == '\n')) + continue; /* invalid line */ + if (*p == '"') { + p++; + if ((volname_conf = strtok( p, "\"" )) == NULL) + continue; /* syntax error */ + } else { + if ((volname_conf = strtok( p, " \t" )) == NULL) + continue; /* syntax error: invalid name */ + } + p = strchr(p, '\0'); + p++; + if (*p == '\0') + continue; /* syntax error */ + + if (strcmp(volname, volname_conf) != 0) + continue; /* another volume name */ + + while (p && isblank(*p)) + p++; + + if (sscanf(p, "%36s", uuid) == 1 ) { + for (int i=0; uuid[i]; i++) + uuid[i] = toupper(uuid[i]); + LOG(log_debug, logtype_afpd, "get_uuid('%s'): UUID: '%s'", volname, uuid); + fclose(fp); + return strdup(uuid); + } + } + } + + if (fp) + fclose(fp); + + /* not found or no file, reopen in append mode */ + + if (stat(obj->options.uuidconf, &tmpstat)) { /* no file */ + if (( fd = creat(obj->options.uuidconf, 0644 )) < 0 ) { + LOG(log_error, logtype_afpd, "ERROR: Cannot create %s (%s).", + obj->options.uuidconf, strerror(errno)); + return NULL; + } + if (( fp = fdopen( fd, "w" )) == NULL ) { + LOG(log_error, logtype_afpd, "ERROR: Cannot fdopen %s (%s).", + obj->options.uuidconf, strerror(errno)); + close(fd); + return NULL; + } + } else if ((fp = fopen(obj->options.uuidconf, "a+")) == NULL) { /* not found */ + LOG(log_error, logtype_afpd, "Cannot create or append to %s (%s).", + obj->options.uuidconf, strerror(errno)); + return NULL; + } + fseek(fp, 0L, SEEK_END); + if(ftell(fp) == 0) { /* size = 0 */ + fprintf(fp, "# DON'T TOUCH NOR COPY THOUGHTLESSLY!\n"); + fprintf(fp, "# This file is auto-generated by afpd\n"); + fprintf(fp, "# and stores UUIDs for TM volumes.\n\n"); + } else { + fseek(fp, -1L, SEEK_END); + if(fgetc(fp) != '\n') fputc('\n', fp); /* last char is \n? */ + } + + /* generate uuid and write to file */ + atalk_uuid_t id; + const char *cp; + randombytes((void *)id, 16); + cp = uuid_bin2string(id); + + LOG(log_debug, logtype_afpd, "get_uuid('%s'): generated UUID '%s'", volname, cp); + + fprintf(fp, "\"%s\"\t%36s\n", volname, cp); + fclose(fp); + + return strdup(cp); +}