1 | /* |
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2 | * Copyright (c) 2014 embedded brains GmbH. All rights reserved. |
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3 | * |
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4 | * embedded brains GmbH |
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5 | * Dornierstr. 4 |
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6 | * 82178 Puchheim |
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7 | * Germany |
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8 | * <info@embedded-brains.de> |
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9 | * |
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10 | * Redistribution and use in source and binary forms, with or without |
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11 | * modification, are permitted provided that the following conditions |
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12 | * are met: |
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13 | * 1. Redistributions of source code must retain the above copyright |
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14 | * notice, this list of conditions and the following disclaimer. |
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15 | * 2. Redistributions in binary form must reproduce the above copyright |
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16 | * notice, this list of conditions and the following disclaimer in the |
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17 | * documentation and/or other materials provided with the distribution. |
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18 | * |
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19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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30 | */ |
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31 | |
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32 | #include <crypt.h> |
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33 | #include <string.h> |
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34 | |
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35 | static char * |
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36 | cf_default_func(const char *pw, const char *salt, struct crypt_data *data) |
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37 | { |
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38 | (void)salt; |
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39 | |
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40 | strncpy(&data->buffer[0], pw, sizeof(data->buffer) - 1); |
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41 | data->buffer[sizeof(data->buffer) - 1] = '\0'; |
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42 | |
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43 | return (&data->buffer[0]); |
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44 | } |
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45 | |
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46 | static struct crypt_format cf_default = |
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47 | CRYPT_FORMAT_INITIALIZER(cf_default_func, NULL); |
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48 | |
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49 | static SLIST_HEAD(, crypt_format) cf_head = { |
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50 | &cf_default |
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51 | }; |
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52 | |
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53 | void crypt_add_format(struct crypt_format *cf) |
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54 | { |
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55 | if (cf->link.sle_next == NULL) |
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56 | SLIST_INSERT_HEAD(&cf_head, cf, link); |
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57 | } |
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58 | |
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59 | char * |
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60 | crypt_r(const char *passwd, const char *salt, struct crypt_data *data) |
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61 | { |
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62 | const struct crypt_format *cf; |
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63 | |
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64 | SLIST_FOREACH(cf, &cf_head, link) |
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65 | if (cf->magic != NULL && strstr(salt, cf->magic) == salt) |
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66 | return (cf->func(passwd, salt, data)); |
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67 | |
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68 | cf = SLIST_FIRST(&cf_head); |
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69 | |
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70 | return (cf->func(passwd, salt, data)); |
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71 | } |
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