diff options
Diffstat (limited to 'third_party/heimdal/kdc/mit_dump.c')
| -rw-r--r-- | third_party/heimdal/kdc/mit_dump.c | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/third_party/heimdal/kdc/mit_dump.c b/third_party/heimdal/kdc/mit_dump.c new file mode 100644 index 0000000..af380bb --- /dev/null +++ b/third_party/heimdal/kdc/mit_dump.c @@ -0,0 +1,227 @@ +/* + * Copyright (c) 2000 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "hprop.h" + +extern krb5_error_code _hdb_mdb_value2entry(krb5_context context, + krb5_data *data, + krb5_kvno target_kvno, + hdb_entry *entry); + +extern int _hdb_mit_dump2mitdb_entry(krb5_context context, + char *line, + krb5_storage *sp); + + + +/* +can have any number of princ stanzas. +format is as follows (only \n indicates newlines) +princ\t%d\t (%d is KRB5_KDB_V1_BASE_LENGTH, always 38) +%d\t (strlen of principal e.g. shadow/foo@ANDREW.CMU.EDU) +%d\t (number of tl_data) +%d\t (number of key data, e.g. how many keys for this user) +%d\t (extra data length) +%s\t (principal name) +%d\t (attributes) +%d\t (max lifetime, seconds) +%d\t (max renewable life, seconds) +%d\t (expiration, seconds since epoch or 2145830400 for never) +%d\t (password expiration, seconds, 0 for never) +%d\t (last successful auth, seconds since epoch) +%d\t (last failed auth, per above) +%d\t (failed auth count) +foreach tl_data 0 to number of tl_data - 1 as above + %d\t%d\t (data type, data length) + foreach tl_data 0 to length-1 + %02x (tl data contents[element n]) + except if tl_data length is 0 + %d (always -1) + \t +foreach key 0 to number of keys - 1 as above + %d\t%d\t (key data version, kvno) + foreach version 0 to key data version - 1 (a key or a salt) + %d\t%d\t(data type for this key, data length for this key) + foreach key data length 0 to length-1 + %02x (key data contents[element n]) + except if key_data length is 0 + %d (always -1) + \t +foreach extra data length 0 to length - 1 + %02x (extra data part) +unless no extra data + %d (always -1) +;\n + +*/ + +static char * +nexttoken(char **p) +{ + char *q; + do { + q = strsep(p, " \t"); + } while(q && *q == '\0'); + return q; +} + +#include <kadm5/admin.h> + +/* XXX: Principal names with '\n' cannot be dumped or loaded */ +static int +my_fgetln(FILE *f, char **bufp, size_t *szp, size_t *lenp) +{ + size_t len; + size_t sz = *szp; + char *buf = *bufp; + char *n; + + if (!buf) { + buf = malloc(sz ? sz : 8192); + if (!buf) + return ENOMEM; + if (!sz) + sz = 8192; + } + + len = 0; + while (fgets(&buf[len], sz-len, f) != NULL) { + len += strlen(&buf[len]); + if (buf[len-1] == '\n') + break; + if (feof(f)) + break; + if (sz > SIZE_MAX/2 || + (n = realloc(buf, sz += 1 + (sz >> 1))) == NULL) { + free(buf); + *bufp = NULL; + *szp = 0; + *lenp = 0; + return ENOMEM; + } + buf = n; + } + *bufp = buf; + *szp = sz; + *lenp = len; + return 0; /* *len == 0 || no EOL -> EOF */ +} + +int +mit_prop_dump(void *arg, const char *file) +{ + krb5_error_code ret; + size_t line_bufsz = 0; + size_t line_len = 0; + char *line = NULL; + int lineno = 0; + FILE *f; + hdb_entry ent; + struct prop_data *pd = arg; + krb5_storage *sp = NULL; + krb5_data kdb_ent; + + memset(&ent, 0, sizeof (ent)); + f = fopen(file, "r"); + if (f == NULL) + return errno; + + ret = ENOMEM; + sp = krb5_storage_emem(); + if (!sp) + goto out; + while ((ret = my_fgetln(f, &line, &line_bufsz, &line_len)) == 0 && + line_len > 0) { + char *p = line; + char *q; + + lineno++; + if(strncmp(line, "kdb5_util", strlen("kdb5_util")) == 0) { + int major; + q = nexttoken(&p); + if (strcmp(q, "kdb5_util") != 0) + errx(1, "line %d: unknown version", lineno); + q = nexttoken(&p); /* load_dump */ + if (strcmp(q, "load_dump") != 0) + errx(1, "line %d: unknown version", lineno); + q = nexttoken(&p); /* load_dump */ + if (strcmp(q, "version") != 0) + errx(1, "line %d: unknown version", lineno); + q = nexttoken(&p); /* x.0 */ + if (sscanf(q, "%d", &major) != 1) + errx(1, "line %d: unknown version", lineno); + if (major != 4 && major != 5 && major != 6) + errx(1, "unknown dump file format, got %d, expected 4-6", + major); + continue; + } else if(strncmp(p, "policy", strlen("policy")) == 0) { + warnx("line: %d: ignoring policy (not supported)", lineno); + continue; + } else if(strncmp(p, "princ", strlen("princ")) != 0) { + warnx("line %d: not a principal", lineno); + continue; + } + krb5_storage_truncate(sp, 0); + ret = _hdb_mit_dump2mitdb_entry(pd->context, line, sp); + if (ret) { + if (ret > 0) + warn("line: %d: failed to parse; ignoring", lineno); + else + warnx("line: %d: failed to parse; ignoring", lineno); + continue; + } + ret = krb5_storage_to_data(sp, &kdb_ent); + if (ret) break; + ret = _hdb_mdb_value2entry(pd->context, &kdb_ent, 0, &ent); + krb5_data_free(&kdb_ent); + if (ret) { + warnx("line: %d: failed to store; ignoring", lineno); + continue; + } + ret = v5_prop(pd->context, NULL, &ent, arg); + hdb_free_entry(pd->context, NULL, &ent); /* XXX */ + if (ret) break; + } + +out: + fclose(f); + free(line); + if (sp) + krb5_storage_free(sp); + if (ret && ret == ENOMEM) + errx(1, "out of memory"); + if (ret) + errx(1, "line %d: problem parsing dump line", lineno); + return ret; +} + |