- Lauri
>From 993cdac99c10524579762445c6d2ceccedfa89b9 Mon Sep 17 00:00:00 2001 From: Lauri Kasanen <[email protected]> Date: Wed, 18 Jul 2012 19:36:16 +0300 Subject: [PATCH 3/3] lib: Add some examples on how to use the library
Signed-off-by: Lauri Kasanen <[email protected]> --- examples/README | 1 + examples/hello.c | 68 ++++++++++++++ examples/image.h | 256 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ examples/list.c | 93 ++++++++++++++++++++ examples/quiz.c | 126 ++++++++++++++++++++++++++ 5 files changed, 544 insertions(+), 0 deletions(-) create mode 100644 examples/README create mode 100644 examples/hello.c create mode 100644 examples/image.h create mode 100644 examples/list.c create mode 100644 examples/quiz.c diff --git a/examples/README b/examples/README new file mode 100644 index 0000000..bbb5b22 --- /dev/null +++ b/examples/README @@ -0,0 +1 @@ +These sample files show the usage of the Monkey library. They're under the GPLv2. diff --git a/examples/hello.c b/examples/hello.c new file mode 100644 index 0000000..5ffba3f --- /dev/null +++ b/examples/hello.c @@ -0,0 +1,68 @@ +/* Monkey HTTP Daemon + * ------------------ + * Copyright (C) 2012, Lauri Kasanen <[email protected]> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Library General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include <monkey.h> +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> + +/* + * This example shows how to start the server, and point it to /tmp. + * It also creates /tmp/index.html. +*/ + +static void write_index() { + + const char *path = "/tmp/index.html"; + + FILE *f = fopen(path, "w"); + if (!f) exit(1); + + fprintf(f, "<html><body><h2>Hello Monkey</h2></body></html>"); + + fclose(f); +} + +int main() { + + int ret; + + write_index(); + + // All defaults. Bind to all interfaces, port 2001, default plugins, /tmp. + // No callbacks are used. + mklib_ctx ctx = mklib_init(NULL, 0, 0, "/tmp"); + if (!ctx) return 1; + + // The default has no index files, let's set index.html as one. + ret = mklib_config(ctx, MKC_INDEXFILE, "index.html", NULL); + if (!ret) return 1; + + // Start the server. + mklib_start(ctx); + + // I'm now free to do my own things. I'm just going to wait for a keypress. + printf("All set and running! Visit me, I default to localhost:2001.\n"); + printf("Press a key to exit.\n"); + getchar(); + + mklib_stop(ctx); + + return 0; +} diff --git a/examples/image.h b/examples/image.h new file mode 100644 index 0000000..31b4ba9 --- /dev/null +++ b/examples/image.h @@ -0,0 +1,256 @@ +#ifndef MONKEY_HEAD_PNG_H +#define MONKEY_HEAD_PNG_H +static const unsigned char monkey_head_png[] = { +0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d, +0x49, 0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x28, +0x08, 0x06, 0x00, 0x00, 0x00, 0xb8, 0x87, 0x79, 0x71, 0x00, 0x00, 0x00, +0x04, 0x73, 0x42, 0x49, 0x54, 0x08, 0x08, 0x08, 0x08, 0x7c, 0x08, 0x64, +0x88, 0x00, 0x00, 0x00, 0x09, 0x70, 0x48, 0x59, 0x73, 0x00, 0x00, 0x03, +0x2c, 0x00, 0x00, 0x03, 0x2c, 0x01, 0x90, 0x94, 0x1c, 0x83, 0x00, 0x00, +0x00, 0x19, 0x74, 0x45, 0x58, 0x74, 0x53, 0x6f, 0x66, 0x74, 0x77, 0x61, +0x72, 0x65, 0x00, 0x77, 0x77, 0x77, 0x2e, 0x69, 0x6e, 0x6b, 0x73, 0x63, +0x61, 0x70, 0x65, 0x2e, 0x6f, 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protected]> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Library General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include <monkey.h> +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> + +/* + * This example shows a directory listing of /tmp, with no access to files. Fun eh? +*/ + +enum { + bufsize = 4096 +}; +static char buf[bufsize]; + +static int list(const mklib_session *sr, const char *vhost, const char *url, + const char *get, unsigned long getlen, + const char *post, unsigned long postlen, + unsigned int *status, const char **content, unsigned long *content_len, + char *header) { + + sprintf(buf, "<html><body><h2>Hello friend. You asked for %s.</h2>\n", url); + strcat(buf, "<pre>"); + + FILE *f = popen("ls -lh /tmp", "r"); + if (!f) exit(1); + + + char mybuf[bufsize - 200]; + + while (fgets(mybuf, bufsize - 200, f)) { + // Note: this is dangerous. Only used for demonstration purposes. + strcat(buf, mybuf); + } + pclose(f); + + strcat(buf, "</pre></body></html>"); + + *content = buf; + *content_len = strlen(buf); + sprintf(header, "Content-type: text/html"); + + // TRUE here means we handled this request. + return MKLIB_TRUE; +} + +/* The callback setting interface can't check the callback for compatibility. + * This makes sure the callback function has the right arguments. */ +static cb_data listf = list; + +int main() { + + int ret; + + // Bind to all interfaces, port 2001, default plugins, no directory. + // Lacking the directory means that no files can be accessed, just what we want. + // We use the data callback. + mklib_ctx ctx = mklib_init(NULL, 0, 0, NULL); + if (!ctx) return 1; + + mklib_callback_set(ctx, MKCB_DATA, listf); + + // Start the server. + mklib_start(ctx); + + // I'm now free to do my own things. I'm just going to wait for a keypress. + printf("All set and running! Visit me, I default to localhost:2001.\n"); + printf("Press a key to exit.\n"); + getchar(); + + mklib_stop(ctx); + + return 0; +} diff --git a/examples/quiz.c b/examples/quiz.c new file mode 100644 index 0000000..28435c3 --- /dev/null +++ b/examples/quiz.c @@ -0,0 +1,126 @@ +/* Monkey HTTP Daemon + * ------------------ + * Copyright (C) 2012, Lauri Kasanen <[email protected]> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Library General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include <monkey.h> +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> + +#include "image.h" + +/* + * This example shows a simple quiz. It includes POST data handling, and + * an image embedded in the code. +*/ + +enum { + bufsize = 4096 +}; +static char buf[bufsize]; + +static void front() { + + sprintf(buf, "<html><body><center><h2>Hello friend." + " Have you seen this guy?</h2>\n" + "<br><br><img src=\"/image.png\">" + "<br><br><form action=/ method=post>" + "<input type=radio name=q1 value=yes>Why yes I have<br>" + "<input type=radio name=q1 value=no>No, who's he?<br>" + "<input type=radio name=q1 value=who>Canada<hr width='20%'>" + "<input type=submit>" + "</form>" + "</center></body></html>"); + +} + +static void points() { + + sprintf(buf, "<html><body><center><h2>Correct!</h2>\n" + "<br><br><a href='http://monkey-project.com'>Visit him.</a>" + "</center></body></html>"); + +} + +static void wrong() { + + sprintf(buf, "<html><body><center><h2>I'm a sad puppy.</h2>\n" + "</center></body></html>"); +} + +static int list(const mklib_session *sr, const char *vhost, const char *url, + const char *get, unsigned long getlen, + const char *post, unsigned long postlen, + unsigned int *status, const char **content, unsigned long *content_len, + char *header) { + + if (strcmp(url, "/image.png") == 0) { + *content = monkey_head_png; + *content_len = sizeof(monkey_head_png); + sprintf(header, "Content-type: image/png"); + + return MKLIB_TRUE; + } + + if (!post) { + front(); + } else { + if (strstr(post, "q1=who") || strstr(post, "q1=yes")) + points(); + else + wrong(); + } + + *content = buf; + *content_len = strlen(buf); + sprintf(header, "Content-type: text/html"); + + + // TRUE here means we handled this request. + return MKLIB_TRUE; +} + +/* The callback setting interface can't check the callback for compatibility. + * This makes sure the callback function has the right arguments. */ +static cb_data listf = list; + +int main() { + + int ret; + + // Bind to all interfaces, port 2001, default plugins, no directory. + // Lacking the directory means that no files can be accessed, just what we want. + // We use the data callback. + mklib_ctx ctx = mklib_init(NULL, 0, 0, NULL); + if (!ctx) return 1; + + mklib_callback_set(ctx, MKCB_DATA, listf); + + // Start the server. + mklib_start(ctx); + + // I'm now free to do my own things. I'm just going to wait for a keypress. + printf("All set and running! Visit me, I default to localhost:2001.\n"); + printf("Press a key to exit.\n"); + getchar(); + + mklib_stop(ctx); + + return 0; +} -- 1.7.2.1
>From 993cdac99c10524579762445c6d2ceccedfa89b9 Mon Sep 17 00:00:00 2001 From: Lauri Kasanen <[email protected]> Date: Wed, 18 Jul 2012 19:36:16 +0300 Subject: [PATCH 3/3] lib: Add some examples on how to use the library Signed-off-by: Lauri Kasanen <[email protected]> --- examples/README | 1 + examples/hello.c | 68 ++++++++++++++ examples/image.h | 256 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ examples/list.c | 93 ++++++++++++++++++++ examples/quiz.c | 126 ++++++++++++++++++++++++++ 5 files changed, 544 insertions(+), 0 deletions(-) create mode 100644 examples/README create mode 100644 examples/hello.c create mode 100644 examples/image.h create mode 100644 examples/list.c create mode 100644 examples/quiz.c diff --git a/examples/README b/examples/README new file mode 100644 index 0000000..bbb5b22 --- /dev/null +++ b/examples/README @@ -0,0 +1 @@ +These sample files show the usage of the Monkey library. They're under the GPLv2. diff --git a/examples/hello.c b/examples/hello.c new file mode 100644 index 0000000..5ffba3f --- /dev/null +++ b/examples/hello.c @@ -0,0 +1,68 @@ +/* Monkey HTTP Daemon + * ------------------ + * Copyright (C) 2012, Lauri Kasanen <[email protected]> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Library General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include <monkey.h> +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> + +/* + * This example shows how to start the server, and point it to /tmp. + * It also creates /tmp/index.html. +*/ + +static void write_index() { + + const char *path = "/tmp/index.html"; + + FILE *f = fopen(path, "w"); + if (!f) exit(1); + + fprintf(f, "<html><body><h2>Hello Monkey</h2></body></html>"); + + fclose(f); +} + +int main() { + + int ret; + + write_index(); + + // All defaults. Bind to all interfaces, port 2001, default plugins, /tmp. + // No callbacks are used. + mklib_ctx ctx = mklib_init(NULL, 0, 0, "/tmp"); + if (!ctx) return 1; + + // The default has no index files, let's set index.html as one. + ret = mklib_config(ctx, MKC_INDEXFILE, "index.html", NULL); + if (!ret) return 1; + + // Start the server. + mklib_start(ctx); + + // I'm now free to do my own things. I'm just going to wait for a keypress. + printf("All set and running! Visit me, I default to localhost:2001.\n"); + printf("Press a key to exit.\n"); + getchar(); + + mklib_stop(ctx); + + return 0; +} diff --git a/examples/image.h b/examples/image.h new file mode 100644 index 0000000..31b4ba9 --- /dev/null +++ b/examples/image.h @@ -0,0 +1,256 @@ +#ifndef MONKEY_HEAD_PNG_H +#define MONKEY_HEAD_PNG_H +static const unsigned char monkey_head_png[] = { +0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d, +0x49, 0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x28, +0x08, 0x06, 0x00, 0x00, 0x00, 0xb8, 0x87, 0x79, 0x71, 0x00, 0x00, 0x00, +0x04, 0x73, 0x42, 0x49, 0x54, 0x08, 0x08, 0x08, 0x08, 0x7c, 0x08, 0x64, +0x88, 0x00, 0x00, 0x00, 0x09, 0x70, 0x48, 0x59, 0x73, 0x00, 0x00, 0x03, +0x2c, 0x00, 0x00, 0x03, 0x2c, 0x01, 0x90, 0x94, 0x1c, 0x83, 0x00, 0x00, +0x00, 0x19, 0x74, 0x45, 0x58, 0x74, 0x53, 0x6f, 0x66, 0x74, 0x77, 0x61, +0x72, 0x65, 0x00, 0x77, 0x77, 0x77, 0x2e, 0x69, 0x6e, 0x6b, 0x73, 0x63, +0x61, 0x70, 0x65, 0x2e, 0x6f, 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protected]> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Library General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include <monkey.h> +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> + +/* + * This example shows a directory listing of /tmp, with no access to files. Fun eh? +*/ + +enum { + bufsize = 4096 +}; +static char buf[bufsize]; + +static int list(const mklib_session *sr, const char *vhost, const char *url, + const char *get, unsigned long getlen, + const char *post, unsigned long postlen, + unsigned int *status, const char **content, unsigned long *content_len, + char *header) { + + sprintf(buf, "<html><body><h2>Hello friend. You asked for %s.</h2>\n", url); + strcat(buf, "<pre>"); + + FILE *f = popen("ls -lh /tmp", "r"); + if (!f) exit(1); + + + char mybuf[bufsize - 200]; + + while (fgets(mybuf, bufsize - 200, f)) { + // Note: this is dangerous. Only used for demonstration purposes. + strcat(buf, mybuf); + } + pclose(f); + + strcat(buf, "</pre></body></html>"); + + *content = buf; + *content_len = strlen(buf); + sprintf(header, "Content-type: text/html"); + + // TRUE here means we handled this request. + return MKLIB_TRUE; +} + +/* The callback setting interface can't check the callback for compatibility. + * This makes sure the callback function has the right arguments. */ +static cb_data listf = list; + +int main() { + + int ret; + + // Bind to all interfaces, port 2001, default plugins, no directory. + // Lacking the directory means that no files can be accessed, just what we want. + // We use the data callback. + mklib_ctx ctx = mklib_init(NULL, 0, 0, NULL); + if (!ctx) return 1; + + mklib_callback_set(ctx, MKCB_DATA, listf); + + // Start the server. + mklib_start(ctx); + + // I'm now free to do my own things. I'm just going to wait for a keypress. + printf("All set and running! Visit me, I default to localhost:2001.\n"); + printf("Press a key to exit.\n"); + getchar(); + + mklib_stop(ctx); + + return 0; +} diff --git a/examples/quiz.c b/examples/quiz.c new file mode 100644 index 0000000..28435c3 --- /dev/null +++ b/examples/quiz.c @@ -0,0 +1,126 @@ +/* Monkey HTTP Daemon + * ------------------ + * Copyright (C) 2012, Lauri Kasanen <[email protected]> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Library General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include <monkey.h> +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> + +#include "image.h" + +/* + * This example shows a simple quiz. It includes POST data handling, and + * an image embedded in the code. +*/ + +enum { + bufsize = 4096 +}; +static char buf[bufsize]; + +static void front() { + + sprintf(buf, "<html><body><center><h2>Hello friend." + " Have you seen this guy?</h2>\n" + "<br><br><img src=\"/image.png\">" + "<br><br><form action=/ method=post>" + "<input type=radio name=q1 value=yes>Why yes I have<br>" + "<input type=radio name=q1 value=no>No, who's he?<br>" + "<input type=radio name=q1 value=who>Canada<hr width='20%'>" + "<input type=submit>" + "</form>" + "</center></body></html>"); + +} + +static void points() { + + sprintf(buf, "<html><body><center><h2>Correct!</h2>\n" + "<br><br><a href='http://monkey-project.com'>Visit him.</a>" + "</center></body></html>"); + +} + +static void wrong() { + + sprintf(buf, "<html><body><center><h2>I'm a sad puppy.</h2>\n" + "</center></body></html>"); +} + +static int list(const mklib_session *sr, const char *vhost, const char *url, + const char *get, unsigned long getlen, + const char *post, unsigned long postlen, + unsigned int *status, const char **content, unsigned long *content_len, + char *header) { + + if (strcmp(url, "/image.png") == 0) { + *content = monkey_head_png; + *content_len = sizeof(monkey_head_png); + sprintf(header, "Content-type: image/png"); + + return MKLIB_TRUE; + } + + if (!post) { + front(); + } else { + if (strstr(post, "q1=who") || strstr(post, "q1=yes")) + points(); + else + wrong(); + } + + *content = buf; + *content_len = strlen(buf); + sprintf(header, "Content-type: text/html"); + + + // TRUE here means we handled this request. + return MKLIB_TRUE; +} + +/* The callback setting interface can't check the callback for compatibility. + * This makes sure the callback function has the right arguments. */ +static cb_data listf = list; + +int main() { + + int ret; + + // Bind to all interfaces, port 2001, default plugins, no directory. + // Lacking the directory means that no files can be accessed, just what we want. + // We use the data callback. + mklib_ctx ctx = mklib_init(NULL, 0, 0, NULL); + if (!ctx) return 1; + + mklib_callback_set(ctx, MKCB_DATA, listf); + + // Start the server. + mklib_start(ctx); + + // I'm now free to do my own things. I'm just going to wait for a keypress. + printf("All set and running! Visit me, I default to localhost:2001.\n"); + printf("Press a key to exit.\n"); + getchar(); + + mklib_stop(ctx); + + return 0; +} -- 1.7.2.1
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