[151] | 1 | #include "server.h" |
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| 2 | #include "xmpp.h" |
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| 3 | |
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| 4 | #define HOST "im.celepar.parana" |
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| 5 | #define IP "10.15.20.219" |
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| 6 | #define PORT "5222" |
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| 7 | |
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| 8 | int tls = 0; |
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| 9 | |
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| 10 | void Read(void * fd, void *buf, int count) |
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| 11 | { |
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| 12 | bzero(buf, count); |
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| 13 | if ( tls == 0 ) |
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| 14 | read(*(int *) fd, buf, (ssize_t)count); |
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| 15 | else |
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| 16 | SSL_read((SSL *) fd, buf, count); |
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| 17 | } |
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| 18 | |
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| 19 | void Write(void * fd, void *buf, int count) |
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| 20 | { |
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| 21 | if ( tls == 0 ) |
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| 22 | write(*(int *) fd, buf, (ssize_t)count); |
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| 23 | else |
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| 24 | SSL_write((SSL *) fd, buf, count); |
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| 25 | } |
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| 26 | |
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| 27 | int main(int argc, char ** argv) |
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| 28 | { |
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| 29 | /* variables to parse arguments */ |
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| 30 | extern int optind, |
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| 31 | optopt; |
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| 32 | extern char * optarg; |
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| 33 | |
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| 34 | char * log_file; |
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| 35 | int c = (int)NULL, |
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| 36 | errflg = (int)NULL, |
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| 37 | verbose = (int)NULL, |
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| 38 | optval = 1; |
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| 39 | |
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| 40 | socklen_t optlen = sizeof(optval); |
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| 41 | |
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| 42 | /* fd -> file descriptor */ |
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| 43 | int socket_server_fd = (int)NULL, |
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| 44 | socket_server_port = (int)NULL, |
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| 45 | socket_accept_fd = (int)NULL, |
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| 46 | sockaddr_in_size = sizeof(struct sockaddr_in), |
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| 47 | err = (int)NULL; |
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| 48 | |
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| 49 | /* Internet socket address stuct */ |
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| 50 | struct sockaddr_in server_addr, |
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| 51 | accept_addr; |
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| 52 | |
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| 53 | struct client * clients = (struct client *) NULL, |
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| 54 | * current = (struct client *) NULL; |
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| 55 | |
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| 56 | SSL_CTX * ctx; |
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| 57 | |
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| 58 | pthread_t threads; |
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| 59 | |
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| 60 | // clear screen |
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| 61 | system(__CLEAR_SCREEN__); |
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| 62 | |
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| 63 | while ( (c = getopt(argc, argv, ":vp:")) != -1 ) |
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| 64 | { |
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| 65 | switch ( c ) |
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| 66 | { |
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| 67 | case 'p': |
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| 68 | if ( socket_server_port = strtol(optarg, 0, 10) == 0 ) |
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| 69 | { |
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| 70 | fprintf(stderr, "Option -%c requires a valid port and '%s' isn't valid\n", optopt, optarg); |
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| 71 | ++errflg; |
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| 72 | } |
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| 73 | break; |
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| 74 | case 'v': |
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| 75 | verbose = 1; |
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| 76 | break; |
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| 77 | case ':': |
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| 78 | // -f or -o without operand |
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| 79 | fprintf(stderr, "Option -%c requires an operand\n", optopt); |
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| 80 | ++errflg; |
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| 81 | break; |
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| 82 | case '?': |
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| 83 | fprintf(stderr, "Unrecognized option: -%c\n", optopt); |
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| 84 | ++errflg; |
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| 85 | } |
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| 86 | } |
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| 87 | if ( errflg ) |
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| 88 | { |
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| 89 | fprintf(stderr, "usage: . . . \n\n"); |
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| 90 | exit(2); |
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| 91 | } |
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| 92 | |
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| 93 | OpenSSL_add_all_algorithms(); |
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| 94 | SSL_library_init(); |
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| 95 | SSL_load_error_strings(); |
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| 96 | |
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| 97 | if ( !(ctx = SSL_CTX_new(TLSv1_server_method())) ) |
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| 98 | { |
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| 99 | printf("Error creating the context.\n"); |
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| 100 | exit(0); |
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| 101 | } |
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| 102 | |
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| 103 | if ( SSL_CTX_set_cipher_list(ctx, CIPHER_LIST) < 1 ) |
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| 104 | { |
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| 105 | printf("Error setting the cipher list.\n"); |
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| 106 | exit(0); |
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| 107 | } |
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| 108 | |
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| 109 | //Indicate the certificate file to be used |
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| 110 | if ( SSL_CTX_use_certificate_file(ctx, CERT_FILE, SSL_FILETYPE_PEM) < 1 ) |
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| 111 | { |
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| 112 | printf("Error setting the certificate file.\n"); |
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| 113 | exit(0); |
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| 114 | } |
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| 115 | |
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| 116 | //Load the password for the Private Key |
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| 117 | SSL_CTX_set_default_passwd_cb_userdata(ctx, KEY_PASSWD); |
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| 118 | |
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| 119 | //Indicate the key file to be used |
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| 120 | if ( SSL_CTX_use_PrivateKey_file(ctx, KEY_FILE, SSL_FILETYPE_PEM) < 1 ) |
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| 121 | { |
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| 122 | printf("Error setting the key file.\n"); |
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| 123 | exit(0); |
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| 124 | } |
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| 125 | |
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| 126 | //Make sure the key and certificate file match |
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| 127 | if ( !SSL_CTX_check_private_key(ctx) ) |
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| 128 | { |
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| 129 | printf("Private key does not match the certificate public key\n"); |
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| 130 | exit(0); |
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| 131 | } |
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| 132 | |
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| 133 | // Set the list of trusted CAs based on the file and/or directory provided |
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| 134 | if ( SSL_CTX_load_verify_locations(ctx, CA_FILE, CA_DIR) < 1 ) |
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| 135 | { |
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| 136 | printf("Error setting verify location\n"); |
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| 137 | exit(0); |
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| 138 | } |
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| 139 | |
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| 140 | // Set for server verification |
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| 141 | SSL_CTX_set_verify(ctx, SSL_VERIFY_NONE, NULL); |
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| 142 | |
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| 143 | /* make a socket */ |
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| 144 | socket_server_fd = socket(AF_INET, SOCK_STREAM, 0); |
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| 145 | if ( socket_server_fd == __SOCKET_ERROR__ ) |
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| 146 | { |
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| 147 | printf("\nCould not make a socket\n"); |
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| 148 | return 0; |
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| 149 | } |
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| 150 | |
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| 151 | bzero((char *) &server_addr, sockaddr_in_size); |
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| 152 | bzero((char *) &accept_addr, sockaddr_in_size); |
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| 153 | |
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| 154 | if ( !socket_server_port ) |
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| 155 | socket_server_port = __DEFAULT_OPEN_PORT__; |
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| 156 | |
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| 157 | /* fill address struct */ |
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| 158 | server_addr.sin_addr.s_addr = INADDR_ANY; |
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| 159 | server_addr.sin_port = htons(socket_server_port); |
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| 160 | server_addr.sin_family = AF_INET; |
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| 161 | bzero(&(server_addr.sin_zero), 8); |
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| 162 | |
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| 163 | if ( __DEBUG__ || verbose ) |
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| 164 | printf("\nBinding to port %d...\n", socket_server_port); |
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| 165 | |
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| 166 | /* bind to a port */ |
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| 167 | if ( bind(socket_server_fd, (struct sockaddr *)&(server_addr), sizeof(server_addr)) == __SOCKET_ERROR__ ) |
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| 168 | { |
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| 169 | printf("\nCould not connect to host\n"); |
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| 170 | exit(1); |
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| 171 | } |
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| 172 | |
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| 173 | /* get port number */ |
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| 174 | getsockname(socket_server_fd, (struct sockaddr *)&(server_addr), (socklen_t *) &(sockaddr_in_size)); |
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| 175 | if ( __DEBUG__ || verbose ) |
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| 176 | { |
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| 177 | printf("\nopened socket as fd (%d) on port (%d) for stream i/o\n", socket_server_fd, ntohs(server_addr.sin_port)); |
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| 178 | |
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| 179 | printf("Server\n\ |
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| 180 | sin_family = %d\n\ |
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| 181 | sin_addr.s_addr = %d\n\ |
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| 182 | sin_port = %d\n" |
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| 183 | , server_addr.sin_family |
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| 184 | , server_addr.sin_addr.s_addr |
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| 185 | , ntohs(server_addr.sin_port) |
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| 186 | ); |
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| 187 | printf("\nMaking a listen queue of %d elements", __QUEUE_SIZE__); |
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| 188 | } |
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| 189 | |
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| 190 | /* establish listen queue */ |
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| 191 | if ( listen(socket_server_fd, __QUEUE_SIZE__) == __SOCKET_ERROR__ ) |
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| 192 | { |
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| 193 | printf("\nCould not listen\n"); |
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| 194 | return 0; |
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| 195 | } |
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| 196 | |
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| 197 | for ( ; ; ) |
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| 198 | { |
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| 199 | if ( __DEBUG__ || verbose ) |
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| 200 | puts("\nWaiting for a connection\n"); |
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| 201 | |
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| 202 | /* get the connected socket */ |
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| 203 | socket_accept_fd = accept(socket_server_fd, (struct sockaddr *) &(accept_addr), (socklen_t *) &(sockaddr_in_size)); |
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| 204 | fcntl(socket_accept_fd, F_SETFL, fcntl(socket_accept_fd, F_GETFL, 0) | O_NDELAY); |
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| 205 | |
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| 206 | if ( socket_accept_fd > -1 ) |
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| 207 | { |
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| 208 | if ( clients == (struct client *) NULL ) |
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| 209 | current = clients; |
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| 210 | else |
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| 211 | while ( (current = clients->next) != (struct client *) NULL ); |
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| 212 | |
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| 213 | current = (struct client *) malloc(sizeof(struct client)); |
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| 214 | current->next = (struct client *) NULL; |
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| 215 | current->fd = socket_accept_fd; |
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| 216 | current->sockaddr = accept_addr; |
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| 217 | current->ctx = ctx; |
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| 218 | current->last = time(NULL); |
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| 219 | |
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| 220 | pthread_create(&(threads), NULL, handler, (void *) current); |
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| 221 | } |
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| 222 | } |
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| 223 | pthread_exit(NULL); |
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| 224 | } |
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| 225 | |
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| 226 | void * handler(void * pClient) |
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| 227 | { |
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| 228 | char buffer_client[__BUFFER_SIZE__], |
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| 229 | buffer_jabber[__BUFFER_SIZE__]; |
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| 230 | struct client * client = (struct client *) pClient; |
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| 231 | int i = 0, err; |
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| 232 | time_t last; |
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| 233 | |
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| 234 | char ip[46]; |
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| 235 | unsigned short port; |
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| 236 | inet_ntop(AF_INET, &(client->sockaddr.sin_addr), ip, sizeof (ip)); |
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| 237 | port = ntohs(client->sockaddr.sin_port); |
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| 238 | printf("\nGot a connection from %s, port %hu\n", ip, port); |
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| 239 | /*---------------------------------------------------*/ |
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| 240 | |
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| 241 | int client_is_connected = -1; |
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| 242 | int jabber_is_connected = -1; |
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| 243 | |
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| 244 | struct sockaddr_in socketaddr; |
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| 245 | int socketfd, |
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| 246 | nHostPort; |
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| 247 | |
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| 248 | char buff[4096]; |
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| 249 | char * xml = (char)NULL; |
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| 250 | SSL_CTX *ctx; |
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| 251 | SSL *myssl; |
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| 252 | |
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| 253 | char * old_host, |
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| 254 | * replace_host; |
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| 255 | |
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| 256 | xml = (char *) malloc(sizeof(__CONNECT__)); |
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| 257 | |
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| 258 | if ( (nHostPort = strtol(PORT, 0, 10)) == 0 ) |
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| 259 | { |
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| 260 | printf("\n<port>\n\n"); |
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| 261 | printf("\ncould not make a socket\n"); |
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| 262 | return 0; |
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| 263 | } |
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| 264 | |
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| 265 | socketfd = socket(AF_INET, SOCK_STREAM, 0); |
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| 266 | |
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| 267 | socketaddr.sin_family = AF_INET; |
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| 268 | socketaddr.sin_addr.s_addr = inet_addr(IP); |
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| 269 | socketaddr.sin_port = htons(nHostPort); |
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| 270 | |
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| 271 | if ( !(ctx = SSL_CTX_new(TLSv1_client_method())) ) |
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| 272 | { |
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| 273 | printf("Error creating the context.\n"); |
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| 274 | exit(0); |
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| 275 | } |
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| 276 | |
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| 277 | err = connect(socketfd, (struct sockaddr*)&socketaddr, sizeof(socketaddr)); |
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| 278 | fcntl(socketfd, F_SETFL, fcntl(socketfd, F_GETFL, 0) | O_NDELAY); |
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| 279 | |
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| 280 | if ( err < 0 ) |
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| 281 | { |
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| 282 | printf("Socket returned error #%d,program terminated\n", err); |
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| 283 | exit(0); |
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| 284 | } |
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| 285 | |
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| 286 | while ( client_is_connected != 0 ) |
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| 287 | { |
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| 288 | /* read from client */ |
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| 289 | puts("\tread - client"); |
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| 290 | bzero(buffer_client, __BUFFER_SIZE__); |
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| 291 | if ( (client_is_connected = read(client->fd, buffer_client, __BUFFER_SIZE__)) != 0 ) |
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| 292 | { |
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| 293 | if ( strlen(buffer_jabber) > 0 ) |
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| 294 | { |
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| 295 | puts("\twrite - client"); |
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| 296 | printf("\t%s\n", buffer_jabber); |
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| 297 | /* write in the client */ |
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| 298 | write(client->fd, buffer_jabber, strlen(buffer_jabber)); |
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| 299 | } |
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| 300 | |
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| 301 | if ( strstr(buffer_client, "<stream:stream") && (old_host = strstr(buffer_client, "to=")) ) |
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| 302 | { |
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| 303 | strncpy(replace_host, buffer_client, (strlen(buffer_client) - strlen(old_host))+4); |
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| 304 | strcat(replace_host, HOST); |
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| 305 | old_host = strstr(old_host, " "); |
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| 306 | old_host--; |
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| 307 | strcat(replace_host, old_host); |
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| 308 | strcpy(buffer_client, replace_host); |
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| 309 | } |
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| 310 | } |
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| 311 | |
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| 312 | /* read from jabber service */ |
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| 313 | puts("\tread - jabber"); |
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| 314 | bzero(buffer_jabber, __BUFFER_SIZE__); |
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| 315 | if ( (jabber_is_connected = read(socketfd, buffer_jabber, __BUFFER_SIZE__)) && strlen(buffer_client) > 0 ) |
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| 316 | { |
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| 317 | puts("\twrite - jabber"); |
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| 318 | printf("\t%s\n", buffer_client); |
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| 319 | /* write in the jabber service */ |
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| 320 | write(socketfd, buffer_client, strlen(buffer_client)); |
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| 321 | } |
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| 322 | |
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| 323 | if ( strstr(buffer_jabber, "<proceed xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>") ) |
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| 324 | { |
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| 325 | fcntl( socketfd, F_SETFL, fcntl( socketfd, F_GETFL ) & ~O_NDELAY ); |
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| 326 | SSL_CTX_set_verify(ctx,SSL_VERIFY_NONE,NULL); |
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| 327 | //Create new ssl object |
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| 328 | myssl=SSL_new(ctx); |
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| 329 | |
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| 330 | if(!myssl){ |
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| 331 | printf("Error creating SSL structure.\n"); |
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| 332 | exit(0); |
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| 333 | } |
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| 334 | |
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| 335 | //Bind the socket to the SSL structure |
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| 336 | SSL_set_fd(myssl,socketfd); |
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| 337 | |
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| 338 | //Connect to the server, SSL layer. |
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| 339 | err=SSL_connect(myssl); |
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| 340 | printf("SSL error #%d in accept,program terminated\n",err); |
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| 341 | //Check for error in connect. |
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| 342 | if (err<1) { |
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| 343 | |
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| 344 | err=SSL_get_error(myssl,err); |
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| 345 | printf("SSL error #%d in accept,program terminated\n",err); |
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| 346 | printf("%d -- %d\n\n", SSL_ERROR_WANT_READ, SSL_ERROR_WANT_WRITE); |
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| 347 | |
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| 348 | if(err==5){printf("sockerrno is:\n");} |
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| 349 | |
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| 350 | close(socketfd); |
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| 351 | SSL_CTX_free(ctx); |
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| 352 | exit(0); |
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| 353 | } |
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| 354 | |
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| 355 | fcntl(socketfd, F_SETFL, fcntl(socketfd, F_GETFL, 0) | O_NDELAY); |
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| 356 | |
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| 357 | write(client->fd, buffer_jabber, strlen(buffer_jabber)); |
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| 358 | bzero(buffer_jabber, __BUFFER_SIZE__); |
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| 359 | |
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| 360 | fcntl( client->fd, F_SETFL, fcntl( client->fd, F_GETFL ) & ~O_NDELAY ); |
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| 361 | |
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| 362 | //Create new ssl object |
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| 363 | if( !(client->myssl = SSL_new(client->ctx)) ) |
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| 364 | { |
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| 365 | printf("Error creating SSL structure.\n"); |
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| 366 | exit(0); |
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| 367 | } |
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| 368 | |
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| 369 | //Bind the socket to the SSL structure |
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| 370 | SSL_set_fd(client->myssl, client->fd); |
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| 371 | |
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| 372 | puts("_____TESTE______"); |
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| 373 | //Connect to the server, SSL layer. |
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| 374 | err = SSL_accept(client->myssl); |
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| 375 | puts("_____TESTE______"); |
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| 376 | |
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| 377 | //Check for error in connect. |
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| 378 | if ( err < 1 ) |
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| 379 | { |
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| 380 | printf("SSL error #%d in accept,program terminated\n", err); |
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| 381 | err = SSL_get_error(client->myssl, 0); |
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| 382 | printf("SSL error #%d in accept,program terminated\n", err); |
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| 383 | |
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| 384 | switch ( err ) |
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| 385 | { |
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| 386 | case SSL_ERROR_NONE : puts("SSL_ERROR_NONE");break; |
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| 387 | case SSL_ERROR_SSL : puts("SSL_ERROR_SSL");break; |
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| 388 | case SSL_ERROR_WANT_READ : puts("SSL_ERROR_WANT_READ"); |
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| 389 | } |
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| 390 | |
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| 391 | if ( err == 5 ) |
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| 392 | printf("sockerrno is: %d\n", err); |
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| 393 | |
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| 394 | |
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| 395 | SSL_CTX_free(client->ctx); |
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| 396 | client_is_connected = 0; |
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| 397 | } |
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| 398 | } |
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| 399 | |
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| 400 | if ( jabber_is_connected == 0 ) |
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| 401 | client_is_connected = jabber_is_connected; |
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| 402 | |
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| 403 | puts("end loop"); |
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| 404 | usleep(500000); |
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| 405 | } |
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| 406 | if ( close(socketfd) == __SOCKET_ERROR__ ) |
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| 407 | { |
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| 408 | printf("\nCould not close jabber socket\n"); |
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| 409 | return 0; |
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| 410 | } |
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| 411 | //--------------------------------------------------- |
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| 412 | if ( close(client->fd) == __SOCKET_ERROR__ ) |
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| 413 | { |
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| 414 | printf("\nCould not close socket\n"); |
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| 415 | return 0; |
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| 416 | } |
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| 417 | |
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| 418 | fflush(stdin); |
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| 419 | fflush(stdout); |
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| 420 | free(client); |
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| 421 | pthread_exit(NULL); |
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| 422 | } |
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