| 26a77f06 |
1 | /* |
| 2 | * mod_msff.c: Microsoft Free Fridays: reject MSIE on Friday. |
| 3 | * |
| 4 | * Michael Anthony <m@beanpod.net> |
| 5 | * You may use this software free for any purpose. |
| 6 | * It has no warranty. |
| 7 | * |
| 8 | * You might find success by trying to build it like this: |
| 9 | * |
| 10 | * gcc -c -I<apache include dir> -fpic -DSHARED_MODULE mod_msff.c |
| 11 | * gcc -shared -o mod_msff.so mod_msff.o |
| 12 | * |
| 13 | * But you also might not. After you do that, you'll want the |
| 14 | * resulting .so file in your Apache installation's libexec directory. |
| 15 | * |
| 16 | * Enable the module by putting this line right around where the |
| 17 | * LoadModule line for mod_auth is: |
| 18 | * |
| 19 | * LoadModule msff_module libexec/mod_msff.so |
| 20 | * |
| 21 | * and put this line right around where the AddModule line for |
| 22 | * mod_auth is: |
| 23 | * |
| 24 | * AddModule mod_msff.c |
| 25 | * |
| 26 | */ |
| 27 | |
| 28 | #include "httpd.h" |
| 29 | #include "http_core.h" |
| 30 | #include "http_config.h" |
| 31 | #include "http_log.h" |
| 32 | #include "http_request.h" |
| 33 | #include <string.h> |
| 34 | #include <ctype.h> |
| 35 | |
| 36 | static void dump_message (request_rec *r) |
| 37 | { |
| 38 | r->content_type = "text/html"; |
| 39 | r->status = FORBIDDEN; |
| 40 | ap_send_http_header (r); |
| 41 | |
| 42 | if (! r->header_only) |
| 43 | { |
| 44 | ap_rprintf ( |
| 45 | r, |
| 46 | "<html xml:lang=\"en\" lang=\"en\">\n" |
| 47 | "<head>\n" |
| 48 | "<title>Go home, Billy!</title>\n" |
| 49 | "</head>\n" |
| 50 | "<body>\n" |
| 51 | "<p><h1>Happy " |
| 52 | "<a href=\"http://davenet.userland.com/2001/06/13\">" |
| 53 | "Microsoft-Free Friday</a>!</h1></p>\n" |
| 54 | "<p>In support of freedom of choice in browser software, this" |
| 55 | " web site is Microsoft-Free on Fridays. Please use any" |
| 56 | " browser except MSIE to access this web site today.</p>\n" |
| 57 | "</body>\n" |
| 58 | "</html>\n"); |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | static int msff (request_rec *r) |
| 63 | { |
| 64 | int ret = 0; |
| 65 | time_t now; |
| 66 | struct tm *tmp; |
| 67 | char *agent = 0; |
| 68 | const char *foo; |
| 69 | char *p; |
| 70 | |
| 71 | foo = ap_table_get (r->headers_in, "User-Agent"); |
| 72 | if (foo) |
| 73 | { |
| 74 | agent = ap_pstrdup (r->pool, foo); |
| 75 | for (p = agent; *p; ++p) |
| 76 | { |
| 77 | if (isupper (*p)) |
| 78 | { |
| 79 | *p = tolower (*p); |
| 80 | } |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | if (agent |
| 85 | && strstr (agent, "msie") |
| 86 | && ! strstr (agent, "opera") |
| 87 | && ! strstr (agent, "oregano")) |
| 88 | { |
| 89 | time (&now); |
| 90 | tmp = localtime (&now); |
| 91 | if (tmp->tm_wday == 5) |
| 92 | { |
| 93 | ret = 1; |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | return ret; |
| 98 | } |
| 99 | |
| 100 | static int handle_msff (request_rec *r) |
| 101 | { |
| 102 | if (msff (r)) |
| 103 | { |
| 104 | dump_message (r); |
| 105 | return OK; |
| 106 | } |
| 107 | else |
| 108 | { |
| 109 | return DECLINED; |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | module MODULE_VAR_EXPORT msff_module; |
| 114 | |
| 115 | static const command_rec msff_cmds[] = |
| 116 | { |
| 117 | { NULL } |
| 118 | }; |
| 119 | |
| 120 | static const handler_rec msff_handlers[] = |
| 121 | { |
| 122 | { "*/*", handle_msff }, |
| 123 | { NULL } |
| 124 | }; |
| 125 | |
| 126 | module MODULE_VAR_EXPORT msff_module = |
| 127 | { |
| 128 | STANDARD_MODULE_STUFF, |
| 129 | NULL, /* initializer */ |
| 130 | NULL, /* dir config creater */ |
| 131 | NULL, /* dir merger --- default is to override */ |
| 132 | NULL, /* server config */ |
| 133 | NULL, /* merge server config */ |
| 134 | msff_cmds, /* command table */ |
| 135 | msff_handlers, /* handlers */ |
| 136 | NULL, /* filename translation */ |
| 137 | NULL, /* check_user_id */ |
| 138 | NULL, /* check auth */ |
| 139 | NULL, /* check access */ |
| 140 | NULL, /* type_checker */ |
| 141 | NULL, /* fixups */ |
| 142 | NULL, /* logger */ |
| 143 | NULL, /* header parser */ |
| 144 | NULL, /* child_init */ |
| 145 | NULL, /* child_exit */ |
| 146 | NULL /* post read-request */ |
| 147 | }; |
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