Mercurial > dovecot > original-hg > dovecot-1.2
annotate src/lib-storage/index/mbox/mbox-md5.c @ 9532:00cd9aacd03c HEAD
Updated copyright notices to include year 2010.
author | Timo Sirainen <tss@iki.fi> |
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date | Mon, 25 Jan 2010 01:18:58 +0200 |
parents | b9faf4db2a9f |
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rev | line source |
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9532
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1 /* Copyright (c) 2004-2010 Dovecot authors, see the included COPYING file */ |
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2 |
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3 #include "lib.h" |
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4 #include "md5.h" |
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5 #include "message-parser.h" |
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6 #include "mbox-md5.h" |
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7 |
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8 #include <stdlib.h> |
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9 |
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10 struct mbox_md5_context { |
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11 struct md5_context hdr_md5_ctx; |
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12 bool seen_received_hdr; |
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13 }; |
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14 |
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15 struct mbox_md5_header_func { |
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16 const char *header; |
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17 bool (*func)(struct mbox_md5_context *ctx, |
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18 struct message_header_line *hdr); |
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19 }; |
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20 |
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21 static bool parse_date(struct mbox_md5_context *ctx, |
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22 struct message_header_line *hdr) |
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23 { |
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24 if (!ctx->seen_received_hdr) { |
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25 /* Received-header contains date too, and more trusted one */ |
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26 md5_update(&ctx->hdr_md5_ctx, hdr->value, hdr->value_len); |
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27 } |
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28 return TRUE; |
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29 } |
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30 |
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31 static bool parse_delivered_to(struct mbox_md5_context *ctx, |
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32 struct message_header_line *hdr) |
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33 { |
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34 md5_update(&ctx->hdr_md5_ctx, hdr->value, hdr->value_len); |
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35 return TRUE; |
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36 } |
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37 |
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38 static bool parse_message_id(struct mbox_md5_context *ctx, |
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39 struct message_header_line *hdr) |
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40 { |
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41 if (!ctx->seen_received_hdr) { |
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42 /* Received-header contains unique ID too, |
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43 and more trusted one */ |
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44 md5_update(&ctx->hdr_md5_ctx, hdr->value, hdr->value_len); |
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45 } |
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46 return TRUE; |
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47 } |
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48 |
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49 static bool parse_received(struct mbox_md5_context *ctx, |
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50 struct message_header_line *hdr) |
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51 { |
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52 if (!ctx->seen_received_hdr) { |
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53 /* get only the first received-header */ |
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54 md5_update(&ctx->hdr_md5_ctx, hdr->value, hdr->value_len); |
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55 if (!hdr->continues) |
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56 ctx->seen_received_hdr = TRUE; |
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57 } |
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58 return TRUE; |
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59 } |
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60 |
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61 static bool parse_x_delivery_id(struct mbox_md5_context *ctx, |
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62 struct message_header_line *hdr) |
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63 { |
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64 /* Let the local delivery agent help generate unique ID's but don't |
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65 blindly trust this header alone as it could just as easily come from |
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66 the remote. */ |
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67 md5_update(&ctx->hdr_md5_ctx, hdr->value, hdr->value_len); |
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68 return TRUE; |
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69 } |
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70 |
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71 |
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72 static struct mbox_md5_header_func md5_header_funcs[] = { |
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73 { "Date", parse_date }, |
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74 { "Delivered-To", parse_delivered_to }, |
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75 { "Message-ID", parse_message_id }, |
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76 { "Received", parse_received }, |
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77 { "X-Delivery-ID", parse_x_delivery_id } |
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78 }; |
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79 |
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80 static int bsearch_header_func_cmp(const void *p1, const void *p2) |
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81 { |
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82 const char *key = p1; |
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83 const struct mbox_md5_header_func *func = p2; |
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84 |
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85 return strcasecmp(key, func->header); |
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86 } |
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87 |
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88 struct mbox_md5_context *mbox_md5_init(void) |
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89 { |
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90 struct mbox_md5_context *ctx; |
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91 |
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92 ctx = i_new(struct mbox_md5_context, 1); |
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93 md5_init(&ctx->hdr_md5_ctx); |
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94 return ctx; |
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95 } |
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96 |
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97 void mbox_md5_continue(struct mbox_md5_context *ctx, |
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98 struct message_header_line *hdr) |
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99 { |
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100 struct mbox_md5_header_func *func; |
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101 |
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102 func = bsearch(hdr->name, md5_header_funcs, |
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103 N_ELEMENTS(md5_header_funcs), sizeof(*md5_header_funcs), |
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104 bsearch_header_func_cmp); |
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105 if (func != NULL) |
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106 (void)func->func(ctx, hdr); |
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107 } |
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108 |
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109 void mbox_md5_finish(struct mbox_md5_context *ctx, |
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110 unsigned char result[16]) |
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111 { |
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112 md5_final(&ctx->hdr_md5_ctx, result); |
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113 i_free(ctx); |
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114 } |