├── LICENSE ├── Makefile ├── README.md ├── async-ssl-cli.cc ├── async-ssl-svr.cc ├── server.pem ├── sync-ssl-cli.cc └── sync-ssl-svr.cc /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 2, June 1991 3 | 4 | Copyright (C) 1989, 1991 Free Software Foundation, Inc., 5 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 6 | Everyone is permitted to copy and distribute verbatim copies 7 | of this license document, but changing it is not allowed. 8 | 9 | Preamble 10 | 11 | The licenses for most software are designed to take away your 12 | freedom to share and change it. By contrast, the GNU General Public 13 | License is intended to guarantee your freedom to share and change free 14 | software--to make sure the software is free for all its users. This 15 | General Public License applies to most of the Free Software 16 | Foundation's software and to any other program whose authors commit to 17 | using it. (Some other Free Software Foundation software is covered by 18 | the GNU Lesser General Public License instead.) You can apply it to 19 | your programs, too. 20 | 21 | When we speak of free software, we are referring to freedom, not 22 | price. Our General Public Licenses are designed to make sure that you 23 | have the freedom to distribute copies of free software (and charge for 24 | this service if you wish), that you receive source code or can get it 25 | if you want it, that you can change the software or use pieces of it 26 | in new free programs; and that you know you can do these things. 27 | 28 | To protect your rights, we need to make restrictions that forbid 29 | anyone to deny you these rights or to ask you to surrender the rights. 30 | These restrictions translate to certain responsibilities for you if you 31 | distribute copies of the software, or if you modify it. 32 | 33 | For example, if you distribute copies of such a program, whether 34 | gratis or for a fee, you must give the recipients all the rights that 35 | you have. You must make sure that they, too, receive or can get the 36 | source code. And you must show them these terms so they know their 37 | rights. 38 | 39 | We protect your rights with two steps: (1) copyright the software, and 40 | (2) offer you this license which gives you legal permission to copy, 41 | distribute and/or modify the software. 42 | 43 | Also, for each author's protection and ours, we want to make certain 44 | that everyone understands that there is no warranty for this free 45 | software. If the software is modified by someone else and passed on, we 46 | want its recipients to know that what they have is not the original, so 47 | that any problems introduced by others will not reflect on the original 48 | authors' reputations. 49 | 50 | Finally, any free program is threatened constantly by software 51 | patents. We wish to avoid the danger that redistributors of a free 52 | program will individually obtain patent licenses, in effect making the 53 | program proprietary. To prevent this, we have made it clear that any 54 | patent must be licensed for everyone's free use or not licensed at all. 55 | 56 | The precise terms and conditions for copying, distribution and 57 | modification follow. 58 | 59 | GNU GENERAL PUBLIC LICENSE 60 | TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 61 | 62 | 0. This License applies to any program or other work which contains 63 | a notice placed by the copyright holder saying it may be distributed 64 | under the terms of this General Public License. The "Program", below, 65 | refers to any such program or work, and a "work based on the Program" 66 | means either the Program or any derivative work under copyright law: 67 | that is to say, a work containing the Program or a portion of it, 68 | either verbatim or with modifications and/or translated into another 69 | language. (Hereinafter, translation is included without limitation in 70 | the term "modification".) Each licensee is addressed as "you". 71 | 72 | Activities other than copying, distribution and modification are not 73 | covered by this License; they are outside its scope. The act of 74 | running the Program is not restricted, and the output from the Program 75 | is covered only if its contents constitute a work based on the 76 | Program (independent of having been made by running the Program). 77 | Whether that is true depends on what the Program does. 78 | 79 | 1. You may copy and distribute verbatim copies of the Program's 80 | source code as you receive it, in any medium, provided that you 81 | conspicuously and appropriately publish on each copy an appropriate 82 | copyright notice and disclaimer of warranty; keep intact all the 83 | notices that refer to this License and to the absence of any warranty; 84 | and give any other recipients of the Program a copy of this License 85 | along with the Program. 86 | 87 | You may charge a fee for the physical act of transferring a copy, and 88 | you may at your option offer warranty protection in exchange for a fee. 89 | 90 | 2. You may modify your copy or copies of the Program or any portion 91 | of it, thus forming a work based on the Program, and copy and 92 | distribute such modifications or work under the terms of Section 1 93 | above, provided that you also meet all of these conditions: 94 | 95 | a) You must cause the modified files to carry prominent notices 96 | stating that you changed the files and the date of any change. 97 | 98 | b) You must cause any work that you distribute or publish, that in 99 | whole or in part contains or is derived from the Program or any 100 | part thereof, to be licensed as a whole at no charge to all third 101 | parties under the terms of this License. 102 | 103 | c) If the modified program normally reads commands interactively 104 | when run, you must cause it, when started running for such 105 | interactive use in the most ordinary way, to print or display an 106 | announcement including an appropriate copyright notice and a 107 | notice that there is no warranty (or else, saying that you provide 108 | a warranty) and that users may redistribute the program under 109 | these conditions, and telling the user how to view a copy of this 110 | License. (Exception: if the Program itself is interactive but 111 | does not normally print such an announcement, your work based on 112 | the Program is not required to print an announcement.) 113 | 114 | These requirements apply to the modified work as a whole. If 115 | identifiable sections of that work are not derived from the Program, 116 | and can be reasonably considered independent and separate works in 117 | themselves, then this License, and its terms, do not apply to those 118 | sections when you distribute them as separate works. But when you 119 | distribute the same sections as part of a whole which is a work based 120 | on the Program, the distribution of the whole must be on the terms of 121 | this License, whose permissions for other licensees extend to the 122 | entire whole, and thus to each and every part regardless of who wrote it. 123 | 124 | Thus, it is not the intent of this section to claim rights or contest 125 | your rights to work written entirely by you; rather, the intent is to 126 | exercise the right to control the distribution of derivative or 127 | collective works based on the Program. 128 | 129 | In addition, mere aggregation of another work not based on the Program 130 | with the Program (or with a work based on the Program) on a volume of 131 | a storage or distribution medium does not bring the other work under 132 | the scope of this License. 133 | 134 | 3. You may copy and distribute the Program (or a work based on it, 135 | under Section 2) in object code or executable form under the terms of 136 | Sections 1 and 2 above provided that you also do one of the following: 137 | 138 | a) Accompany it with the complete corresponding machine-readable 139 | source code, which must be distributed under the terms of Sections 140 | 1 and 2 above on a medium customarily used for software interchange; or, 141 | 142 | b) Accompany it with a written offer, valid for at least three 143 | years, to give any third party, for a charge no more than your 144 | cost of physically performing source distribution, a complete 145 | machine-readable copy of the corresponding source code, to be 146 | distributed under the terms of Sections 1 and 2 above on a medium 147 | customarily used for software interchange; or, 148 | 149 | c) Accompany it with the information you received as to the offer 150 | to distribute corresponding source code. (This alternative is 151 | allowed only for noncommercial distribution and only if you 152 | received the program in object code or executable form with such 153 | an offer, in accord with Subsection b above.) 154 | 155 | The source code for a work means the preferred form of the work for 156 | making modifications to it. For an executable work, complete source 157 | code means all the source code for all modules it contains, plus any 158 | associated interface definition files, plus the scripts used to 159 | control compilation and installation of the executable. However, as a 160 | special exception, the source code distributed need not include 161 | anything that is normally distributed (in either source or binary 162 | form) with the major components (compiler, kernel, and so on) of the 163 | operating system on which the executable runs, unless that component 164 | itself accompanies the executable. 165 | 166 | If distribution of executable or object code is made by offering 167 | access to copy from a designated place, then offering equivalent 168 | access to copy the source code from the same place counts as 169 | distribution of the source code, even though third parties are not 170 | compelled to copy the source along with the object code. 171 | 172 | 4. You may not copy, modify, sublicense, or distribute the Program 173 | except as expressly provided under this License. Any attempt 174 | otherwise to copy, modify, sublicense or distribute the Program is 175 | void, and will automatically terminate your rights under this License. 176 | However, parties who have received copies, or rights, from you under 177 | this License will not have their licenses terminated so long as such 178 | parties remain in full compliance. 179 | 180 | 5. You are not required to accept this License, since you have not 181 | signed it. However, nothing else grants you permission to modify or 182 | distribute the Program or its derivative works. These actions are 183 | prohibited by law if you do not accept this License. Therefore, by 184 | modifying or distributing the Program (or any work based on the 185 | Program), you indicate your acceptance of this License to do so, and 186 | all its terms and conditions for copying, distributing or modifying 187 | the Program or works based on it. 188 | 189 | 6. Each time you redistribute the Program (or any work based on the 190 | Program), the recipient automatically receives a license from the 191 | original licensor to copy, distribute or modify the Program subject to 192 | these terms and conditions. You may not impose any further 193 | restrictions on the recipients' exercise of the rights granted herein. 194 | You are not responsible for enforcing compliance by third parties to 195 | this License. 196 | 197 | 7. If, as a consequence of a court judgment or allegation of patent 198 | infringement or for any other reason (not limited to patent issues), 199 | conditions are imposed on you (whether by court order, agreement or 200 | otherwise) that contradict the conditions of this License, they do not 201 | excuse you from the conditions of this License. If you cannot 202 | distribute so as to satisfy simultaneously your obligations under this 203 | License and any other pertinent obligations, then as a consequence you 204 | may not distribute the Program at all. For example, if a patent 205 | license would not permit royalty-free redistribution of the Program by 206 | all those who receive copies directly or indirectly through you, then 207 | the only way you could satisfy both it and this License would be to 208 | refrain entirely from distribution of the Program. 209 | 210 | If any portion of this section is held invalid or unenforceable under 211 | any particular circumstance, the balance of the section is intended to 212 | apply and the section as a whole is intended to apply in other 213 | circumstances. 214 | 215 | It is not the purpose of this section to induce you to infringe any 216 | patents or other property right claims or to contest validity of any 217 | such claims; this section has the sole purpose of protecting the 218 | integrity of the free software distribution system, which is 219 | implemented by public license practices. Many people have made 220 | generous contributions to the wide range of software distributed 221 | through that system in reliance on consistent application of that 222 | system; it is up to the author/donor to decide if he or she is willing 223 | to distribute software through any other system and a licensee cannot 224 | impose that choice. 225 | 226 | This section is intended to make thoroughly clear what is believed to 227 | be a consequence of the rest of this License. 228 | 229 | 8. If the distribution and/or use of the Program is restricted in 230 | certain countries either by patents or by copyrighted interfaces, the 231 | original copyright holder who places the Program under this License 232 | may add an explicit geographical distribution limitation excluding 233 | those countries, so that distribution is permitted only in or among 234 | countries not thus excluded. In such case, this License incorporates 235 | the limitation as if written in the body of this License. 236 | 237 | 9. The Free Software Foundation may publish revised and/or new versions 238 | of the General Public License from time to time. Such new versions will 239 | be similar in spirit to the present version, but may differ in detail to 240 | address new problems or concerns. 241 | 242 | Each version is given a distinguishing version number. If the Program 243 | specifies a version number of this License which applies to it and "any 244 | later version", you have the option of following the terms and conditions 245 | either of that version or of any later version published by the Free 246 | Software Foundation. If the Program does not specify a version number of 247 | this License, you may choose any version ever published by the Free Software 248 | Foundation. 249 | 250 | 10. If you wish to incorporate parts of the Program into other free 251 | programs whose distribution conditions are different, write to the author 252 | to ask for permission. For software which is copyrighted by the Free 253 | Software Foundation, write to the Free Software Foundation; we sometimes 254 | make exceptions for this. Our decision will be guided by the two goals 255 | of preserving the free status of all derivatives of our free software and 256 | of promoting the sharing and reuse of software generally. 257 | 258 | NO WARRANTY 259 | 260 | 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY 261 | FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN 262 | OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES 263 | PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED 264 | OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 265 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS 266 | TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE 267 | PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, 268 | REPAIR OR CORRECTION. 269 | 270 | 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 271 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR 272 | REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, 273 | INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING 274 | OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED 275 | TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY 276 | YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER 277 | PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE 278 | POSSIBILITY OF SUCH DAMAGES. 279 | 280 | END OF TERMS AND CONDITIONS 281 | 282 | How to Apply These Terms to Your New Programs 283 | 284 | If you develop a new program, and you want it to be of the greatest 285 | possible use to the public, the best way to achieve this is to make it 286 | free software which everyone can redistribute and change under these terms. 287 | 288 | To do so, attach the following notices to the program. It is safest 289 | to attach them to the start of each source file to most effectively 290 | convey the exclusion of warranty; and each file should have at least 291 | the "copyright" line and a pointer to where the full notice is found. 292 | 293 | {description} 294 | Copyright (C) {year} {fullname} 295 | 296 | This program is free software; you can redistribute it and/or modify 297 | it under the terms of the GNU General Public License as published by 298 | the Free Software Foundation; either version 2 of the License, or 299 | (at your option) any later version. 300 | 301 | This program is distributed in the hope that it will be useful, 302 | but WITHOUT ANY WARRANTY; without even the implied warranty of 303 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 304 | GNU General Public License for more details. 305 | 306 | You should have received a copy of the GNU General Public License along 307 | with this program; if not, write to the Free Software Foundation, Inc., 308 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 309 | 310 | Also add information on how to contact you by electronic and paper mail. 311 | 312 | If the program is interactive, make it output a short notice like this 313 | when it starts in an interactive mode: 314 | 315 | Gnomovision version 69, Copyright (C) year name of author 316 | Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 317 | This is free software, and you are welcome to redistribute it 318 | under certain conditions; type `show c' for details. 319 | 320 | The hypothetical commands `show w' and `show c' should show the appropriate 321 | parts of the General Public License. Of course, the commands you use may 322 | be called something other than `show w' and `show c'; they could even be 323 | mouse-clicks or menu items--whatever suits your program. 324 | 325 | You should also get your employer (if you work as a programmer) or your 326 | school, if any, to sign a "copyright disclaimer" for the program, if 327 | necessary. Here is a sample; alter the names: 328 | 329 | Yoyodyne, Inc., hereby disclaims all copyright interest in the program 330 | `Gnomovision' (which makes passes at compilers) written by James Hacker. 331 | 332 | {signature of Ty Coon}, 1 April 1989 333 | Ty Coon, President of Vice 334 | 335 | This General Public License does not permit incorporating your program into 336 | proprietary programs. If your program is a subroutine library, you may 337 | consider it more useful to permit linking proprietary applications with the 338 | library. If this is what you want to do, use the GNU Lesser General 339 | Public License instead of this License. 340 | 341 | -------------------------------------------------------------------------------- /Makefile: -------------------------------------------------------------------------------- 1 | SOURCES=async-ssl-svr.cc sync-ssl-svr.cc async-ssl-cli.cc sync-ssl-cli.cc 2 | PROGRAMS = $(SOURCES:.cc=) 3 | 4 | default: $(PROGRAMS) 5 | 6 | clean: 7 | rm *.o $(PROGRAMS) -f 8 | 9 | .cc: 10 | g++ -Wall -g $< -o $@ -lssl -lcrypto 11 | 12 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | install 2 | ==== 3 | 4 | make 5 | 6 | usage 7 | ==== 8 | 9 | ./async-ssl-svr 443 10 | 11 | ./async-ssl-cli www.openssl.com 443 12 | 13 | ./sync-ssl-svr 443 14 | 15 | ./sync-ssl-cli www.openssl.com 443 16 | 17 | openssl的代码解释 18 | ==== 19 | 1. 初始化SSL库 20 | ```c 21 | SSL_load_error_strings (); 22 | SSL_library_init (); 23 | sslContext = SSL_CTX_new (SSLv23_method ()); 24 | 25 | //server端需要初始化证书与私钥 26 | string cert = "server.pem", key = "server.pem"; 27 | r = SSL_CTX_use_certificate_file(g_sslCtx, cert.c_str(), SSL_FILETYPE_PEM); 28 | r = SSL_CTX_use_PrivateKey_file(g_sslCtx, key.c_str(), SSL_FILETYPE_PEM); 29 | r = SSL_CTX_check_private_key(g_sslCtx); 30 | ``` 31 | 32 | 2. 非阻塞方式建立tcp连接（网上有很多epoll相关例子） 33 | 34 | 3. 使用已建立连接的socket初始化ssl 35 | ```c 36 | ch->ssl_ = SSL_new (g_sslCtx); 37 | int r = SSL_set_fd(ch->ssl_, ch->fd_); 38 | //服务器端 SSL_set_accept_state(ch->ssl_); 39 | //客户端 SSL_set_connect_state(ch->ssl_); 40 | ``` 41 | 4. epoll_wait后，如果SSL相关的socket有读写事件需要处理则进行SSL握手，直到握手完成 42 | ```c 43 | int r = SSL_do_handshake(ch->ssl_); 44 | if (r == 1) { // 若返回值为1，则SSL握手已完成 45 | 　　ch->sslConnected_ = true; 46 | 　　return; 47 | } 48 | int err = SSL_get_error(ch->ssl_, r); 49 | if (err == SSL_ERROR_WANT_WRITE) { //SSL需要在非阻塞socket可写时写入数据 50 | 　　ch->events_ |= EPOLLOUT; 51 | 　　ch->events_ &= ~EPOLLIN; 52 | } else if (err == SSL_ERROR_WANT_READ) { //SSL需要在非阻塞socket可读时读入数据 53 | 　　ch->events_ |= EPOLLIN; //等待socket可读 54 | 　　ch->events_ &= ~EPOLLOUT; //暂时不关注socket可写状态 55 | } else { //错误 56 | 　　ERR_print_errors(errBio); 57 | } 58 | ``` 59 | 60 | 5. 握手完成后，进行SSL数据的读写 61 | ```c 62 | SSL_write(con->sslHandle, text, len); 63 | SSL_read(con->sslHandle, buf, sizeof buf); 64 | ``` 65 | comments 66 | ==== 67 | 68 | those examples demostrate how to write sync/async openssl programs 69 | 70 | email 71 | ==== 72 | 73 | dongfuye@163.com 74 | -------------------------------------------------------------------------------- /async-ssl-cli.cc: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | #include 5 | #include 6 | #include 7 | #include 8 | #include 9 | #include 10 | #include 11 | #include 12 | #include 13 | #include 14 | #include 15 | #include 16 | #include 17 | #include 18 | #include 19 | #include 20 | #include 21 | 22 | #define log(...) do { printf(__VA_ARGS__); fflush(stdout); } while(0) 23 | #define check0(x, ...) if(x) do { log( __VA_ARGS__); exit(1); } while(0) 24 | #define check1(x, ...) if(!(x)) do { log( __VA_ARGS__); exit(1); } while(0) 25 | SSL_CTX *sslContext; 26 | 27 | struct SSLCon{ 28 | int socket; 29 | SSL *sslHandle; 30 | ~SSLCon() { 31 | SSL_shutdown (sslHandle); 32 | SSL_free (sslHandle); 33 | close(socket); 34 | } 35 | }; 36 | 37 | int setNonBlock(int fd, bool value) { 38 | int flags = fcntl(fd, F_GETFL, 0); 39 | if (flags < 0) { 40 | return errno; 41 | } 42 | if (value) { 43 | return fcntl(fd, F_SETFL, flags | O_NONBLOCK); 44 | } 45 | return fcntl(fd, F_SETFL, flags & ~O_NONBLOCK); 46 | } 47 | 48 | // Establish a regular tcp connection 49 | int tcpConnect (const char* svr, short port) 50 | { 51 | struct hostent *host = gethostbyname (svr); 52 | int handle = socket (AF_INET, SOCK_STREAM, 0); 53 | check1(handle >= 0, "socket return error"); 54 | setNonBlock(handle, true); 55 | struct sockaddr_in server; 56 | bzero (&server, sizeof server); 57 | server.sin_family = AF_INET; 58 | server.sin_port = htons (port); 59 | server.sin_addr = *((struct in_addr *) host->h_addr); 60 | 61 | log("connecting to %s %d\n", svr, port); 62 | int r = connect (handle, (struct sockaddr *) &server, 63 | sizeof (struct sockaddr)); 64 | if (r < 0 && (errno == EWOULDBLOCK || errno == EAGAIN)) { 65 | struct pollfd pfd; 66 | pfd.fd = handle; 67 | pfd.events = POLLOUT | POLLERR; 68 | while (r == 0) { 69 | r = poll(&pfd, 1, 100); 70 | } 71 | check1(pfd.revents == POLLOUT, "poll return error events: %d", pfd.revents); 72 | } 73 | check1(r, "connect to %s %d failed\n", svr, port); 74 | log("connected to %s %d\n", svr, port); 75 | return handle; 76 | } 77 | 78 | void sslConnect (SSLCon* con, const char* host, short port) 79 | { 80 | bzero(con, sizeof *con); 81 | con->socket = tcpConnect (host, port); 82 | 83 | con->sslHandle = SSL_new (sslContext); 84 | if (con->sslHandle == NULL) { 85 | ERR_print_errors_fp (stderr); 86 | check1(0, "SSL_new failed"); 87 | } 88 | 89 | if (!SSL_set_fd (con->sslHandle, con->socket)) { 90 | ERR_print_errors_fp (stderr); 91 | check1(0, "SSL_set_fd failed"); 92 | } 93 | 94 | SSL_set_connect_state (con->sslHandle); 95 | int r = 0; 96 | int events = POLLIN | POLLOUT | POLLERR; 97 | while ((r = SSL_do_handshake(con->sslHandle)) != 1) { 98 | int err = SSL_get_error(con->sslHandle, r); 99 | if (err == SSL_ERROR_WANT_WRITE) { 100 | events |= POLLOUT; 101 | events &= ~POLLIN; 102 | log("return want write set events %d\n", events); 103 | } else if (err == SSL_ERROR_WANT_READ) { 104 | events |= EPOLLIN; 105 | events &= ~EPOLLOUT; 106 | log("return want read set events %d\n", events); 107 | } else { 108 | log("SSL_do_handshake return %d error %d errno %d msg %s\n", r, err, errno, strerror(errno)); 109 | ERR_print_errors_fp(stderr); 110 | check1(0, "do handshake error"); 111 | } 112 | struct pollfd pfd; 113 | pfd.fd = con->socket; 114 | pfd.events = events; 115 | do { 116 | r = poll(&pfd, 1, 100); 117 | } while (r == 0); 118 | check1(r == 1, "poll return %d error events: %d errno %d %s\n", r, pfd.revents, errno, strerror(errno)); 119 | } 120 | log("ssl connected \n"); 121 | } 122 | 123 | void sslRead (SSLCon* con) 124 | { 125 | char buf[256]; 126 | int rd = 0; 127 | int r = 1; 128 | while (rd < int(sizeof buf) && r) { 129 | log("reading\n"); 130 | 131 | struct pollfd pfd; 132 | pfd.fd = con->socket; 133 | pfd.events = POLLIN; 134 | do { 135 | r = poll(&pfd, 1, 100); 136 | }while (r == 0); 137 | 138 | r = SSL_read(con->sslHandle, buf+rd, sizeof buf - rd); 139 | if (r < 0) { 140 | int err = SSL_get_error(con->sslHandle, r); 141 | if (err == SSL_ERROR_WANT_READ) { 142 | continue; 143 | } 144 | ERR_print_errors_fp (stderr); 145 | } 146 | check1(r >= 0, "SSL_read error return %d errno %d msg %s", r, errno, strerror(errno)); 147 | log("read %d bytes\n", r); 148 | rd += r; 149 | } 150 | log("read %d bytes contents:\n%.*s\n", rd, rd, buf); 151 | } 152 | 153 | void sslWrite (SSLCon* con, const char *text) 154 | { 155 | int len = strlen(text); 156 | int wd = SSL_write (con->sslHandle, text, len); 157 | check1(wd == len, "SSL_write error. return %d errno %d msg %s", wd, errno, strerror(errno)); 158 | log("sslWrite %d bytes\n", len); 159 | } 160 | 161 | int main (int argc, char **argv) 162 | { 163 | if (argc < 3) { 164 | printf("usage %s \n", argv[0]); 165 | return 0; 166 | } 167 | SSL_load_error_strings (); 168 | SSL_library_init (); 169 | sslContext = SSL_CTX_new (SSLv23_client_method ()); 170 | if (sslContext == NULL) 171 | ERR_print_errors_fp (stderr); 172 | { 173 | SSLCon con; 174 | sslConnect(&con, argv[1], atoi(argv[2])); 175 | sslWrite (&con, "GET /\r\n\r\n"); 176 | sslRead (&con); 177 | } 178 | SSL_CTX_free (sslContext); 179 | return 0; 180 | } 181 | -------------------------------------------------------------------------------- /async-ssl-svr.cc: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | #include 5 | #include 6 | #include 7 | #include 8 | #include 9 | #include 10 | #include 11 | #include 12 | #include 13 | #include 14 | #include 15 | #include 16 | #include 17 | #include 18 | #include 19 | #include 20 | #include 21 | 22 | using namespace std; 23 | 24 | #define log(...) do { printf(__VA_ARGS__); fflush(stdout); } while(0) 25 | #define check0(x, ...) if(x) do { log( __VA_ARGS__); exit(1); } while(0) 26 | #define check1(x, ...) if(!x) do { log( __VA_ARGS__); exit(1); } while(0) 27 | 28 | BIO* errBio; 29 | SSL_CTX* g_sslCtx; 30 | 31 | int epollfd, listenfd; 32 | 33 | struct Channel { 34 | int fd_; 35 | SSL *ssl_; 36 | bool tcpConnected_; 37 | bool sslConnected_; 38 | int events_; 39 | Channel(int fd, int events) { 40 | memset(this, 0, sizeof *this); 41 | fd_ = fd; 42 | events_ = events; 43 | } 44 | void update() { 45 | struct epoll_event ev; 46 | memset(&ev, 0, sizeof(ev)); 47 | ev.events = events_; 48 | ev.data.ptr = this; 49 | log("modifying fd %d events read %d write %d\n", 50 | fd_, ev.events & EPOLLIN, ev.events & EPOLLOUT); 51 | int r = epoll_ctl(epollfd, EPOLL_CTL_MOD, fd_, &ev); 52 | check0(r, "epoll_ctl mod failed %d %s", errno, strerror(errno)); 53 | } 54 | ~Channel() { 55 | log("deleting fd %d\n", fd_); 56 | close(fd_); 57 | if (ssl_) { 58 | SSL_shutdown (ssl_); 59 | SSL_free(ssl_); 60 | } 61 | } 62 | }; 63 | 64 | int setNonBlock(int fd, bool value) { 65 | int flags = fcntl(fd, F_GETFL, 0); 66 | if (flags < 0) { 67 | return errno; 68 | } 69 | if (value) { 70 | return fcntl(fd, F_SETFL, flags | O_NONBLOCK); 71 | } 72 | return fcntl(fd, F_SETFL, flags & ~O_NONBLOCK); 73 | } 74 | 75 | 76 | void addEpollFd(int epollfd, Channel* ch) { 77 | struct epoll_event ev; 78 | memset(&ev, 0, sizeof(ev)); 79 | ev.events = ch->events_; 80 | ev.data.ptr = ch; 81 | log("adding fd %d events %d\n", ch->fd_, ev.events); 82 | int r = epoll_ctl(epollfd, EPOLL_CTL_ADD, ch->fd_, &ev); 83 | check0(r, "epoll_ctl add failed %d %s", errno, strerror(errno)); 84 | } 85 | 86 | int createServer(short port) { 87 | int fd = socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, 0); 88 | setNonBlock(fd, 1); 89 | struct sockaddr_in addr; 90 | memset(&addr, 0, sizeof addr); 91 | addr.sin_family = AF_INET; 92 | addr.sin_port = htons(port); 93 | addr.sin_addr.s_addr = INADDR_ANY; 94 | int r = ::bind(fd,(struct sockaddr *)&addr, sizeof(struct sockaddr)); 95 | check0(r, "bind to 0.0.0.0:%d failed %d %s", port, errno, strerror(errno)); 96 | r = listen(fd, 20); 97 | check0(r, "listen failed %d %s", errno, strerror(errno)); 98 | log("fd %d listening at %d\n", fd, port); 99 | return fd; 100 | } 101 | 102 | void handleAccept() { 103 | struct sockaddr_in raddr; 104 | socklen_t rsz = sizeof(raddr); 105 | int cfd; 106 | while ((cfd = accept4(listenfd,(struct sockaddr *)&raddr,&rsz, SOCK_CLOEXEC))>=0) { 107 | sockaddr_in peer, local; 108 | socklen_t alen = sizeof(peer); 109 | int r = getpeername(cfd, (sockaddr*)&peer, &alen); 110 | if (r < 0) { 111 | log("get peer name failed %d %s\n", errno, strerror(errno)); 112 | continue; 113 | } 114 | r = getsockname(cfd, (sockaddr*)&local, &alen); 115 | if (r < 0) { 116 | log("getsockname failed %d %s\n", errno, strerror(errno)); 117 | continue; 118 | } 119 | setNonBlock(cfd, 1); 120 | Channel* ch = new Channel(cfd, EPOLLIN | EPOLLOUT); 121 | addEpollFd(epollfd, ch); 122 | } 123 | } 124 | 125 | void handleHandshake(Channel* ch) { 126 | if (!ch->tcpConnected_) { 127 | struct pollfd pfd; 128 | pfd.fd = ch->fd_; 129 | pfd.events = POLLOUT | POLLERR; 130 | int r = poll(&pfd, 1, 0); 131 | if (r == 1 && pfd.revents == POLLOUT) { 132 | log("tcp connected fd %d\n", ch->fd_); 133 | ch->tcpConnected_ = true; 134 | ch->events_ = EPOLLIN | EPOLLOUT | EPOLLERR; 135 | ch->update(); 136 | } else { 137 | log("poll fd %d return %d revents %d\n", ch->fd_, r, pfd.revents); 138 | delete ch; 139 | return; 140 | } 141 | } 142 | if (ch->ssl_ == NULL) { 143 | ch->ssl_ = SSL_new (g_sslCtx); 144 | check0(ch->ssl_ == NULL, "SSL_new failed"); 145 | int r = SSL_set_fd(ch->ssl_, ch->fd_); 146 | check0(!r, "SSL_set_fd failed"); 147 | log("SSL_set_accept_state for fd %d\n", ch->fd_); 148 | SSL_set_accept_state(ch->ssl_); 149 | } 150 | int r = SSL_do_handshake(ch->ssl_); 151 | if (r == 1) { 152 | ch->sslConnected_ = true; 153 | log("ssl connected fd %d\n", ch->fd_); 154 | return; 155 | } 156 | int err = SSL_get_error(ch->ssl_, r); 157 | int oldev = ch->events_; 158 | if (err == SSL_ERROR_WANT_WRITE) { 159 | ch->events_ |= EPOLLOUT; 160 | ch->events_ &= ~EPOLLIN; 161 | log("return want write set events %d\n", ch->events_); 162 | if (oldev == ch->events_) return; 163 | ch->update(); 164 | } else if (err == SSL_ERROR_WANT_READ) { 165 | ch->events_ |= EPOLLIN; 166 | ch->events_ &= ~EPOLLOUT; 167 | log("return want read set events %d\n", ch->events_); 168 | if (oldev == ch->events_) return; 169 | ch->update(); 170 | } else { 171 | log("SSL_do_handshake return %d error %d errno %d msg %s\n", r, err, errno, strerror(errno)); 172 | ERR_print_errors(errBio); 173 | delete ch; 174 | } 175 | } 176 | 177 | void handleDataRead(Channel* ch) { 178 | char buf[4096]; 179 | int rd = SSL_read(ch->ssl_, buf, sizeof buf); 180 | int ssle = SSL_get_error(ch->ssl_, rd); 181 | if (rd > 0) { 182 | const char* cont = "HTTP/1.1 200 OK\r\nConnection: Close\r\n\r\n"; 183 | int len1 = strlen(cont); 184 | int wd = SSL_write(ch->ssl_, cont, len1); 185 | log("SSL_write %d bytes\n", wd); 186 | delete ch; 187 | } 188 | if (rd < 0 && ssle != SSL_ERROR_WANT_READ) { 189 | log("SSL_read return %d error %d errno %d msg %s", rd, ssle, errno, strerror(errno)); 190 | delete ch; 191 | return; 192 | } 193 | if (rd == 0) { 194 | if (ssle == SSL_ERROR_ZERO_RETURN) 195 | log("SSL has been shutdown.\n"); 196 | else 197 | log("Connection has been aborted.\n"); 198 | delete ch; 199 | } 200 | } 201 | 202 | void handleRead(Channel* ch) { 203 | if (ch->fd_ == listenfd) { 204 | return handleAccept(); 205 | } 206 | if (ch->sslConnected_) { 207 | return handleDataRead(ch); 208 | } 209 | handleHandshake(ch); 210 | } 211 | 212 | void handleWrite(Channel* ch) { 213 | if (!ch->sslConnected_) { 214 | return handleHandshake(ch); 215 | } 216 | log("handle write fd %d\n", ch->fd_); 217 | ch->events_ &= ~EPOLLOUT; 218 | ch->update(); 219 | } 220 | 221 | void initSSL() { 222 | SSL_load_error_strings (); 223 | int r = SSL_library_init (); 224 | check0(!r, "SSL_library_init failed"); 225 | g_sslCtx = SSL_CTX_new (SSLv23_method ()); 226 | check0(g_sslCtx == NULL, "SSL_CTX_new failed"); 227 | errBio = BIO_new_fd(2, BIO_NOCLOSE); 228 | string cert = "server.pem", key = "server.pem"; 229 | r = SSL_CTX_use_certificate_file(g_sslCtx, cert.c_str(), SSL_FILETYPE_PEM); 230 | check0(r<=0, "SSL_CTX_use_certificate_file %s failed", cert.c_str()); 231 | r = SSL_CTX_use_PrivateKey_file(g_sslCtx, key.c_str(), SSL_FILETYPE_PEM); 232 | check0(r<=0, "SSL_CTX_use_PrivateKey_file %s failed", key.c_str()); 233 | r = SSL_CTX_check_private_key(g_sslCtx); 234 | check0(!r, "SSL_CTX_check_private_key failed"); 235 | log("SSL inited\n"); 236 | } 237 | 238 | int g_stop = 0; 239 | 240 | void loop_once(int epollfd, int waitms) { 241 | const int kMaxEvents = 20; 242 | struct epoll_event activeEvs[kMaxEvents]; 243 | int n = epoll_wait(epollfd, activeEvs, kMaxEvents, waitms); 244 | for (int i = n-1; i >= 0; i --) { 245 | Channel* ch = (Channel*)activeEvs[i].data.ptr; 246 | int events = activeEvs[i].events; 247 | if (events & (EPOLLIN | EPOLLERR)) { 248 | log("fd %d handle read\n", ch->fd_); 249 | handleRead(ch); 250 | } else if (events & EPOLLOUT) { 251 | log("fd %d handle write\n", ch->fd_); 252 | handleWrite(ch); 253 | } else { 254 | log("unknown event %d\n", events); 255 | } 256 | } 257 | } 258 | 259 | void handleInterrupt(int sig) { 260 | g_stop = true; 261 | } 262 | 263 | int main(int argc, char **argv) 264 | { 265 | signal(SIGINT, handleInterrupt); 266 | initSSL(); 267 | epollfd = epoll_create1(EPOLL_CLOEXEC); 268 | listenfd = createServer(443); 269 | Channel* li = new Channel(listenfd, EPOLLIN); 270 | addEpollFd(epollfd, li); 271 | while (!g_stop) { 272 | loop_once(epollfd, 100); 273 | } 274 | delete li; 275 | ::close(epollfd); 276 | BIO_free(errBio); 277 | SSL_CTX_free(g_sslCtx); 278 | ERR_free_strings(); 279 | log("program exited\n"); 280 | return 0; 281 | } 282 | -------------------------------------------------------------------------------- /server.pem: -------------------------------------------------------------------------------- 1 | -----BEGIN PRIVATE KEY----- 2 | MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQC+Z2mi8shZ3T0c 3 | 5ItI4KwLfYFXxNr3dmIY+2DS9boD18T46Ccow3wW/15SCcI1BdD/pPBmOTpUWP0b 4 | B22l4gAOUIWfk/CAHuaD+pHAGMlolAMdscwDZPdaM3XEdu839y2gy6RL4Pxls8No 5 | sI5h2BTGl3YgjSxA+vKJE+/IXzjajfiKfGHuywPjwPpGl1juOgSaU6zqLf4MlUnq 6 | Daq7r5V9KtJh8dz46PB6c8ALGNM+dxMJSLMyDvT1/7d9aYBkBvpb3mxOu9agIDNn 7 | 2AZ3AxYwA0ykBLmc5R6V0toqRIjfruvBHqQfcjsFaoKS6O+QjtA/eBTIzGajnyis 8 | 1TfeJxURAgMBAAECggEARANIlq5GpuMCW3m/zy6CBjC0rRdiaBbff7D7qx+fbJP8 9 | hjTXGBaMEuLxXDikKLCFMWxHexxiG5MWBjunDSQnhPV6ZcBAnmNrUCWHPqkb+ME2 10 | Q7so9uVv/cZ4AM/DL6iZoeBcNcaOIf4OhSzcD1NSSIX96i7Dagq57AE1G8v30Qlb 11 | CDybxrkbW8D9TkPh57oH/VNuhGLsFp62BjleYtNqo+aknlnHCj09mFQ+N5cA8DuK 12 | 0CcNFCy4C8oZvg9kVsfdypBr4IR0kXTArqMyjUgXe9KqOzf/GdHR9anWhOzHsy/b 13 | T1Nb+vF6fDm0o6WHWhfODoF4iklrdwRibAnme+zegQKBgQDzvt4KQLnG5jWxeCLn 14 | P+QR9q63H98oL3kKToyXPaJVL+I71GtZm4yhYP8KB+bTgrMHPhR5se63cySX2lMJ 15 | RRKkieeEFuDVKVHulRH39g9fMvvl/f97qwv2mAJhdNuIaIjLSVFjQ8WZ6UWvJczp 16 | sTAyhIxDGiOV00HaUp3BFFnEOQKBgQDH+gLGIsLlPAwuMpbSyuDJucMk0Jzo3+at 17 | 6h19pu5JpfTWn71Zs0RL45x9BLwbx8oi+vjECjMiaE2OyKC6uObxpXRl5okWQ63E 18 | XBpbONB+fx2v2h1cuB7iJCJxJ6DPTL70torWtwCp+I7CcIT+J/2SqPhiKipWo0Sk 19 | R2dxeb1HmQKBgEU8mmXfLOZKzkWzEncNtwNDRy3NZ95KXd+HoHf1kf8Qsvq7xCKY 20 | BMJygv+ebvr1zVTpVXecC2sg0ewwoBWqATmr0o+6z/K84gEbZxdAVe181gDmvYOr 21 | eqJ5W3PDdfixeOoF0ZCY17B4isrNuf9HzaEL9au56RHOCI6zmQwXc8hBAoGBAMaI 22 | h0h+Kk+7FbynrOUJVbHwIrTiB2WLJFF1JGIi4F9ty21omWv8dcmB51KW6MoLx7qC 23 | v4ahObLnKlifBjNabq1pPe4MufzIpDNV3TTDavqq6KY1PQFYKhEJHsiINzaXUt1Q 24 | fPY+KQKWKeUQIHjS6wQ3jKCoi/AHl5Yg7anS2v/BAoGBAIi309nwDFJG/2UFSObA 25 | WC+V6T7qy62UlwFlBwsFCbxf9FmFQfoP6wwbQef35Wx2aDnZaSzoXKn/1jvG5e1e 26 | TFW7K9oC8JkeA//mnTAVrgkvkaHGZmd27zQYB1U3DsO3fLvEt62PZn8fyEwaczeM 27 | vOOkHciP4pIhAObg/uiO0V9I 28 | -----END PRIVATE KEY----- 29 | -----BEGIN CERTIFICATE----- 30 | MIIDXTCCAkWgAwIBAgIJAM9HYUREwVxFMA0GCSqGSIb3DQEBCwUAMEUxCzAJBgNV 31 | BAYTAkNOMRMwEQYDVQQIDApTb21lLVN0YXRlMSEwHwYDVQQKDBhJbnRlcm5ldCBX 32 | aWRnaXRzIFB0eSBMdGQwHhcNMTQxMTAxMDY1OTE2WhcNMjQxMDI5MDY1OTE2WjBF 33 | MQswCQYDVQQGEwJDTjETMBEGA1UECAwKU29tZS1TdGF0ZTEhMB8GA1UECgwYSW50 34 | ZXJuZXQgV2lkZ2l0cyBQdHkgTHRkMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIB 35 | CgKCAQEAvmdpovLIWd09HOSLSOCsC32BV8Ta93ZiGPtg0vW6A9fE+OgnKMN8Fv9e 36 | UgnCNQXQ/6TwZjk6VFj9GwdtpeIADlCFn5PwgB7mg/qRwBjJaJQDHbHMA2T3WjN1 37 | xHbvN/ctoMukS+D8ZbPDaLCOYdgUxpd2II0sQPryiRPvyF842o34inxh7ssD48D6 38 | RpdY7joEmlOs6i3+DJVJ6g2qu6+VfSrSYfHc+OjwenPACxjTPncTCUizMg709f+3 39 | fWmAZAb6W95sTrvWoCAzZ9gGdwMWMANMpAS5nOUeldLaKkSI367rwR6kH3I7BWqC 40 | kujvkI7QP3gUyMxmo58orNU33icVEQIDAQABo1AwTjAdBgNVHQ4EFgQUJS1vm+Z3 41 | dm8z29qqdzeI94ZmoqwwHwYDVR0jBBgwFoAUJS1vm+Z3dm8z29qqdzeI94Zmoqww 42 | DAYDVR0TBAUwAwEB/zANBgkqhkiG9w0BAQsFAAOCAQEAl/6TWgvtFCcxue+YmpLz 43 | gcPckabL2dbgC7uxbIMgFEJUjtmHRpY1Tih8pKqqbdkPWhK2IBvyCqp7L1P5A4ib 44 | FTKRGogJSaWMjnh/w644yrmsjjo5uoAueqygwha+OAC3gtt6p844hb9KJTjaoMHC 45 | caaZ6jCAnfjAp2O/3bBpgXCy69UNlWizx8aXajn5a9ah/DrY8wZfI+ESRH3oMd/f 46 | hecgZLhdTPSkUJi/l6WK9wBuI8mVl+/Gesi8zgz8u+/BRZsxQoP9tBWUjOG396fm 47 | PCpapHzlchV1N1s0k+poxmoO/GI0GTPcIY3RhU6QJIQ0dtGCLZFVWchJms5u9GBg 48 | xw== 49 | -----END CERTIFICATE----- 50 | -------------------------------------------------------------------------------- /sync-ssl-cli.cc: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | #include 5 | #include 6 | #include 7 | #include 8 | #include 9 | #include 10 | 11 | #include 12 | #include 13 | #include 14 | 15 | #define log(...) do { printf(__VA_ARGS__); fflush(stdout); } while(0) 16 | #define check0(x, ...) if(x) do { log( __VA_ARGS__); exit(1); } while(0) 17 | #define check1(x, ...) if(!(x)) do { log( __VA_ARGS__); exit(1); } while(0) 18 | SSL_CTX *sslContext; 19 | 20 | struct SSLCon{ 21 | int socket; 22 | SSL *sslHandle; 23 | ~SSLCon() { 24 | close(socket); 25 | SSL_shutdown (sslHandle); 26 | SSL_free (sslHandle); 27 | } 28 | }; 29 | 30 | // Establish a regular tcp connection 31 | int tcpConnect (const char* svr, short port) 32 | { 33 | struct hostent *host = gethostbyname (svr); 34 | int handle = socket (AF_INET, SOCK_STREAM, 0); 35 | check1(handle >= 0, "socket return error"); 36 | struct sockaddr_in server; 37 | bzero (&server, sizeof server); 38 | server.sin_family = AF_INET; 39 | server.sin_port = htons (port); 40 | server.sin_addr = *((struct in_addr *) host->h_addr); 41 | 42 | log("connecting to %s %d\n", svr, port); 43 | int r = connect (handle, (struct sockaddr *) &server, 44 | sizeof (struct sockaddr)); 45 | check0(r, "connect to %s %d failed\n", svr, port); 46 | log("connected to %s %d\n", svr, port); 47 | return handle; 48 | } 49 | 50 | void sslConnect (SSLCon* con, const char* host, short port) 51 | { 52 | bzero(con, sizeof *con); 53 | con->socket = tcpConnect (host, port); 54 | 55 | con->sslHandle = SSL_new (sslContext); 56 | if (con->sslHandle == NULL) { 57 | ERR_print_errors_fp (stderr); 58 | check1(0, "SSL_new failed"); 59 | } 60 | 61 | if (!SSL_set_fd (con->sslHandle, con->socket)) { 62 | ERR_print_errors_fp (stderr); 63 | check1(0, "SSL_set_fd failed"); 64 | } 65 | 66 | if (SSL_connect (con->sslHandle) != 1) { 67 | ERR_print_errors_fp (stderr); 68 | check1(0, "SSL_connect failed"); 69 | } 70 | } 71 | 72 | void sslRead (SSLCon* con) 73 | { 74 | char buf[256]; 75 | int rd = 0; 76 | int r = 1; 77 | while (rd < int(sizeof buf) && r) { 78 | log("reading\n"); 79 | r = SSL_read(con->sslHandle, buf+rd, sizeof buf - rd); 80 | if (r < 0) { 81 | ERR_print_errors_fp (stderr); 82 | } 83 | check1(r >= 0, "SSL_read error return %d errno %d msg %s", r, errno, strerror(errno)); 84 | log("read %d bytes\n", r); 85 | rd += r; 86 | } 87 | log("read %d bytes contents:\n%.*s\n", rd, rd, buf); 88 | } 89 | 90 | void sslWrite (SSLCon* con, const char *text) 91 | { 92 | int len = strlen(text); 93 | int wd = SSL_write (con->sslHandle, text, len); 94 | check1(wd == len, "SSL_write error. return %d errno %d msg %s", wd, errno, strerror(errno)); 95 | log("sslWrite %d bytes\n", len); 96 | } 97 | 98 | int main (int argc, char **argv) 99 | { 100 | if (argc < 3) { 101 | printf("usage %s \n", argv[0]); 102 | return 0; 103 | } 104 | SSL_load_error_strings (); 105 | SSL_library_init (); 106 | sslContext = SSL_CTX_new (SSLv23_client_method ()); 107 | if (sslContext == NULL) 108 | ERR_print_errors_fp (stderr); 109 | { 110 | SSLCon con; 111 | sslConnect(&con, argv[1], atoi(argv[2])); 112 | sslWrite (&con, "GET /\r\n\r\n"); 113 | sslRead (&con); 114 | } 115 | SSL_CTX_free (sslContext); 116 | return 0; 117 | } 118 | -------------------------------------------------------------------------------- /sync-ssl-svr.cc: -------------------------------------------------------------------------------- 1 | //gcc -Wall -o ssl-svr-demo ssl-svr-demo.c -lssl -lcrypto 2 | #include 3 | #include 4 | #include 5 | #include 6 | #include 7 | #include 8 | #include 9 | #include 10 | #include 11 | #include 12 | #include 13 | #include 14 | 15 | #include "openssl/bio.h" 16 | #include "openssl/ssl.h" 17 | #include "openssl/err.h" 18 | 19 | #define log(...) do { printf(__VA_ARGS__); fflush(stdout); } while(0) 20 | #define check0(x, ...) if(x) do { log( __VA_ARGS__); exit(1); } while(0) 21 | #define check1(x, ...) if(!(x)) do { log( __VA_ARGS__); exit(1); } while(0) 22 | 23 | int main(int argc, char **argv) 24 | { 25 | if (argc < 2) { 26 | printf("usage %s \n", argv[0]); 27 | exit(1); 28 | } 29 | struct sockaddr_in addr; 30 | 31 | SSL_library_init(); 32 | SSL_load_error_strings(); 33 | ERR_load_BIO_strings(); 34 | 35 | SSL_CTX* ctx = SSL_CTX_new (SSLv23_method()); 36 | check1(ctx, "SSL_CTX_new failed\n"); 37 | 38 | // 要求校验对方证书 39 | //SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL); 40 | 41 | // 加载CA的证书 42 | //!SSL_CTX_load_verify_locations(ctx, "cacert.cer", NULL); 43 | 44 | // 加载自己的证书 45 | int r = SSL_CTX_use_certificate_file(ctx, "server.pem", SSL_FILETYPE_PEM); 46 | check1(r>0, "SSL_CTX_use_certificate_file failed"); 47 | 48 | // 加载自己的私钥 49 | r = SSL_CTX_use_PrivateKey_file(ctx, "server.pem", SSL_FILETYPE_PEM); 50 | check1(r>0, "SSL_CTX_use_PrivateKey_file failed"); 51 | 52 | // 判定私钥是否正确 53 | r = SSL_CTX_check_private_key(ctx); 54 | check1(r, "SSL_CTX_check_private_key failed"); 55 | 56 | log("ssl inited\n"); 57 | // 创建并等待连接 58 | int nListenFd = socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, 0); 59 | memset(&addr, 0, sizeof addr); 60 | addr.sin_family = AF_INET; 61 | addr.sin_port = htons(atoi(argv[1])); 62 | int len = sizeof(addr); 63 | addr.sin_addr.s_addr = INADDR_ANY; 64 | r = bind(nListenFd, (struct sockaddr *)&addr, len); 65 | check0(r, "bind error errno %d %s", errno, strerror(errno)); 66 | r = listen(nListenFd, 20); 67 | check0(r, "listen error errno %d %s", errno, strerror(errno)); 68 | log("listen at %d\n", atoi(argv[1])); 69 | for(;;) { 70 | memset(&addr, 0, sizeof(addr)); 71 | int len = sizeof(addr); 72 | int nAcceptFd = accept(nListenFd, (struct sockaddr *)&addr, (socklen_t *)&len); 73 | log("Accept a connect from [%s:%d]\n", 74 | inet_ntoa(addr.sin_addr), ntohs(addr.sin_port)); 75 | 76 | // 将连接付给SSL 77 | SSL* ssl = SSL_new (ctx); 78 | check1(ssl, "SSL_new failed"); 79 | SSL_set_fd (ssl, nAcceptFd); 80 | 81 | SSL_set_accept_state(ssl); 82 | r = SSL_do_handshake(ssl); 83 | check1(r, "SSL_do_handshake failed"); 84 | // 进行操作 85 | char szBuffer[1024]; 86 | memset(szBuffer, 0, sizeof(szBuffer)); 87 | SSL_read(ssl,szBuffer, sizeof(szBuffer)); 88 | const char* resp = "HTTP/1.1 200 OK\r\nConnection: Close\r\n\r\n"; 89 | SSL_write(ssl, resp, strlen(resp)); 90 | log("send response %ld bytes to client\n", strlen(resp)); 91 | // 释放资源 92 | SSL_free (ssl); 93 | close(nAcceptFd); 94 | } 95 | SSL_CTX_free (ctx); 96 | close(nListenFd); 97 | return 0; 98 | } 99 | --------------------------------------------------------------------------------