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1 | /* $Id: authsasl.c,v 1.5 2008/07/10 02:43:55 mrsam Exp $ */ |
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2 | |
| 3 | /* |
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4 | ** Copyright 1998 - 2008 Double Precision, Inc. See COPYING for |
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5 | ** distribution information. |
| 6 | */ |
| 7 | |
| 8 | #include "courier_auth_config.h" |
| 9 | #include "courierauthsasl.h" |
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10 | #include "authsaslclient.h" |
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11 | #include <stdlib.h> |
| 12 | #include <ctype.h> |
| 13 | #include <string.h> |
| 14 | #include <errno.h> |
| 15 | |
| 16 | /* Use the SASL_LIST macro to build authsasl_list */ |
| 17 | |
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18 | #define NO_SERVER_FUNC() |
| 19 | |
| 20 | #define SERVER_FUNC(b) int b(const char *, const char *, \ |
| 21 | char *(*)(const char *, void *), \ |
| 22 | void *, \ |
| 23 | char **, \ |
| 24 | char **); |
| 25 | |
| 26 | #define SASL(a,b,c) b |
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27 | SASL_LIST |
| 28 | |
| 29 | #undef SASL |
| 30 | |
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31 | #undef SERVER_FUNC |
| 32 | #define SERVER_FUNC(n) n |
| 33 | |
| 34 | #undef NO_SERVER_FUNC |
| 35 | #define NO_SERVER_FUNC() 0 |
| 36 | |
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37 | #define SASL(a,b,c) {a, b}, |
| 38 | |
| 39 | struct authsasl_info authsasl_list[] = { |
| 40 | |
| 41 | SASL_LIST |
| 42 | |
| 43 | { 0, 0}}; |
| 44 | |
| 45 | int auth_sasl(const char *method, |
| 46 | const char *initreply, |
| 47 | char *(*callback_func)(const char *, void *), |
| 48 | void *callback_arg, |
| 49 | char **authtype_ptr, /* Returned - AUTHTYPE */ |
| 50 | char **authdata_ptr) |
| 51 | { |
| 52 | int i; |
| 53 | char *p, *q; |
| 54 | |
| 55 | if ((p=malloc(strlen(method)+1)) == 0) |
| 56 | return (0); |
| 57 | strcpy(p, method); |
| 58 | for (q=p; *q; q++) |
| 59 | *q=toupper((int)(unsigned char)*q); |
| 60 | |
| 61 | for (i=0; authsasl_list[i].sasl_method; i++) |
| 62 | { |
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63 | if (strcmp(p, authsasl_list[i].sasl_method) == 0 && |
| 64 | authsasl_list[i].sasl_func) |
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65 | { |
| 66 | free(p); |
| 67 | return ( (*authsasl_list[i].sasl_func) |
| 68 | (method, |
| 69 | initreply, callback_func, |
| 70 | callback_arg, |
| 71 | authtype_ptr, authdata_ptr)); |
| 72 | } |
| 73 | } |
| 74 | free(p); |
| 75 | errno=ENOENT; |
| 76 | return (AUTHSASL_ERROR); |
| 77 | } |
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78 | |
| 79 | int auth_sasl_ex(const char *method, |
| 80 | const char *initresponse, |
| 81 | const char *externalauth, |
| 82 | char *(*callback_func)(const char *, void *), |
| 83 | void *callback_arg, |
| 84 | char **authtype_ptr, /* Returned - AUTHTYPE */ |
| 85 | char **authdata_ptr) |
| 86 | { |
| 87 | char *uid; |
| 88 | int n; |
| 89 | |
| 90 | if (strcmp(method, "EXTERNAL")) |
| 91 | return auth_sasl(method, initresponse, callback_func, |
| 92 | callback_arg, |
| 93 | authtype_ptr, |
| 94 | authdata_ptr); |
| 95 | |
| 96 | if (initresponse && *initresponse) |
| 97 | return AUTHSASL_ERROR; |
| 98 | |
| 99 | if (!externalauth || !*externalauth) |
| 100 | return AUTHSASL_ERROR; |
| 101 | |
| 102 | if (!initresponse) |
| 103 | { |
| 104 | uid=callback_func("", callback_arg); |
| 105 | |
| 106 | if (*uid == '*') |
| 107 | { |
| 108 | free(uid); |
| 109 | return (AUTHSASL_ABORTED); |
| 110 | } |
| 111 | |
| 112 | n=authsasl_frombase64(uid); |
| 113 | |
| 114 | if (n < 0) |
| 115 | { |
| 116 | free(uid); |
| 117 | return AUTHSASL_ABORTED; |
| 118 | } |
| 119 | uid[n]=0; |
| 120 | |
| 121 | if (uid[0]) |
| 122 | { |
| 123 | free(uid); |
| 124 | return AUTHSASL_ABORTED; |
| 125 | } |
| 126 | free(uid); |
| 127 | } |
| 128 | |
| 129 | if ((*authtype_ptr=strdup("EXTERNAL")) == NULL) |
| 130 | return AUTHSASL_ABORTED; |
| 131 | |
| 132 | if ((*authdata_ptr=strdup(externalauth)) == NULL) |
| 133 | { |
| 134 | free(authtype_ptr); |
| 135 | return AUTHSASL_ABORTED; |
| 136 | } |
| 137 | |
| 138 | return 0; |
| 139 | } |
HCoop / hcoop / debian / courier-authlib.git / blame