Init vger
This commit is contained in:
Solene Rapenne
commit
c2d813c0f1
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@ -0,0 +1,10 @@
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all: vger
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clean:
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rm vger
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vger: main.c
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${CC} -o vger main.c
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test: vger
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cd tests && sh test.sh
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/*
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* Copyright (c) 2020 Solène Rapenne <solene@openbsd.org>
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*
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* MIT LICENSE
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <err.h>
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#include <errno.h>
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#define BUFF_LEN_1 1000
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#define BUFF_LEN_2 1025
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#define BUFF_LEN_3 1024
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#define GEMINI_PART 9
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#define DEFAULT_CHROOT "/var/gemini/"
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void ok_status(void);
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void err_status(void);
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void display_file(char *);
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int main(int, char **);
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void
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ok_status(void)
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{
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printf("20 text/gemini; lang=en\r\n");
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}
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void
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err_status(void)
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{
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printf("40 text/gemini; lang=en\r\n");
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}
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void
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display_file(char *path)
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{
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size_t buflen = BUFF_LEN_1;
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char *buffer[BUFF_LEN_1];
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ssize_t nread;
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struct stat sb;
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// this is to check if path is a directory
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stat(path, &sb);
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FILE *fd = fopen(path, "r");
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if (fd != NULL && S_ISDIR(sb.st_mode) != 1) {
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// check if directory
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ok_status();
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/* read the file and write it to stdout */
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while ((nread = fread(buffer, sizeof(char), buflen, fd)) != 0)
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fwrite(buffer, sizeof(char), nread, stdout);
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fclose(fd);
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} else {
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err_status();
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/*
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* fprintf(stderr, "can't open %s %ld: %s\n", path,strlen(path),
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* strerror(errno));
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*/
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}
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}
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int
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main(int argc, char **argv)
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{
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char buffer[BUFF_LEN_2];
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char request[BUFF_LEN_2];
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char hostname[BUFF_LEN_2];
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char file[BUFF_LEN_2];
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char path[BUFF_LEN_2] = "";
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int option;
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char *pos;
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while((option = getopt(argc, argv, ":d:")) != -1)
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{
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switch(option)
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{
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case 'd':
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strlcpy(path, optarg, sizeof(path));
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break;
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}
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}
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if(strlen(path) == 0)
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strlcpy(path, DEFAULT_CHROOT, sizeof(DEFAULT_CHROOT));
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if (unveil(path, "r") == -1)
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err(1, "unveil");
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if (pledge("stdio rpath", NULL) == -1)
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err(1, "pledge");
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/*
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* read 1024 chars from stdin
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* to get the request
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*/
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fgets(request, BUFF_LEN_3, stdin);
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/* remove \r\n at the end of string */
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pos = strchr(request, '\r');
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if(pos != NULL)
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strlcpy(pos, "\0", 1);
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/*
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* check if the beginning of the request starts with
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* gemini://
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*/
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int start_with_gemini = strncmp(request, "gemini://", 9);
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/* the request must start with gemini:// */
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if(start_with_gemini != 0) {
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/* error code url malformed */
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printf("request «%s» doesn't match gemini:// at index %i",
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request, start_with_gemini);
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exit(1);
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}
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/* remove the gemini:// part */
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strlcpy(buffer, request + GEMINI_PART, sizeof(buffer) - GEMINI_PART);
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strlcpy(request, buffer, sizeof(request));
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/*
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* look for the first / after the hostname
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* in order to split hostname and uri
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*/
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pos = strchr(request, '/');
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if (pos != NULL) {
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/* if there is a / found */
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int position = -1;
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for (int i = 0; i < sizeof(request); i++) {
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if (*pos == request[i]) {
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position = i;
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break;
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}
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}
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/* separate hostname and uri */
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if (position != -1) {
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strlcpy(hostname, request, position);
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strlcpy(file, request + position + 1, sizeof(request));
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/* use a default file if no file are requested
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* this can happen in two cases
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* gemini://hostname/
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* gemini://hostname/directory/
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*/
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if(strlen(file) == 0)
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strlcpy(file, "/index.gmi", 11);
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if(file[strlen(file)-1] == '/')
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strlcat(file, "index.gmi", sizeof(file));
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} else {
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puts("error undefined");
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exit(2);
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}
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} else {
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/*
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* there are no slash / in the request
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* -2 to remove \r\n
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*/
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strlcpy(hostname, request, sizeof(hostname));
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strlcpy(file, "/index.gmi", 11);
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}
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/* add the base dir to the file requested */
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strlcat(path, file, sizeof(path));
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/* open file and send it to stdout */
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display_file(path);
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return(0);
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}
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#!/bin/sh
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set -x
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# serving a file
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OUT=$(printf "gemini://host.name/main.gmi\r\n" | ../vger -d var/gemini/ | tee /dev/stderr | md5)
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if ! [ $OUT = "d11e0c0ff074f5627f2d2af72fd07104" ] ; then echo "error" ; exit 1 ; fi
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# default index.gmi file
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OUT=$(printf "gemini://host.name\r\n" | ../vger -d var/gemini/ | tee /dev/stderr | md5)
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if ! [ $OUT = "3edd48286850d386592403956aec770f" ] ; then echo "error" ; exit 1 ; fi
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# default index.gmi file when using a trailing slash
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OUT=$(printf "gemini://host.name/\r\n" | ../vger -d var/gemini/ | tee /dev/stderr | md5)
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if ! [ $OUT = "3edd48286850d386592403956aec770f" ] ; then echo "error" ; exit 1 ; fi
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# file from /var/gemini/index.md
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OUT=$(printf "gemini://host.name/index.md\r\n" | ../vger | tee /dev/stderr | md5)
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if ! [ $OUT = "bdbb22f0d1f4dd9e31bfc91686e7441d" ] ; then echo "error" ; exit 1 ; fi
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#### no -d parameter from here
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# file from /var/gemini/blog/
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OUT=$(printf "gemini://host.name/blog/\r\n" | ../vger | tee /dev/stderr | md5)
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if ! [ $OUT = "83bd01c9af0e44d5439b9ac95dc28132" ] ; then echo "error" ; exit 1 ; fi
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# file from /var/gemini/blog
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OUT=$(printf "gemini://host.name/blog\r\n" | ../vger | tee /dev/stderr | md5)
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if ! [ $OUT = "f78c481e1614f1713e077b89aba5ab94" ] ; then echo "error" ; exit 1 ; fi
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@ -0,0 +1,7 @@
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this is
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the INDEX
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On multiples lines
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with accents @^~#@¹#^¹~#@^¹\~{@^¹~@^{
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@ -0,0 +1 @@
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hello
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