From: Simone Piccardi Date: Sun, 18 Aug 2002 10:34:10 +0000 (+0000) Subject: Aggiunto esempio di server per le fortunes, basato sulle fifo. X-Git-Url: https://gapil.gnulinux.it/gitweb/?a=commitdiff_plain;h=198add70c8604fe7ffb05689aa693d782102917e;p=gapil.git Aggiunto esempio di server per le fortunes, basato sulle fifo. --- diff --git a/sources/FortuneClient.c b/sources/FortuneClient.c new file mode 100644 index 0000000..9d5c546 --- /dev/null +++ b/sources/FortuneClient.c @@ -0,0 +1,126 @@ +/* FortuneClient.c + * + * Copyright (C) 2002 Simone Piccardi + * + * 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 + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +/**************************************************************** + * + * Program fortune + * Fortune client + * + * Author: Simone Piccardi + * Aug. 2002 + * + * Usage: fortune -h give all info + * + * $Id: FortuneClient.c,v 1.1 2002/08/18 10:34:09 piccardi Exp $ + * + ****************************************************************/ +/* + * Include needed headers + */ +#include /* predefined types */ +#include /* include unix standard library */ +#include /* IP addresses conversion utiliites */ +#include /* include standard I/O library */ +#include +#include + +#include "macros.h" + +/* Subroutines declaration */ +void usage(void); + +int main(int argc, char *argv[]) +{ +/* Variables definition */ + int n = 0; + char *fortunefilename = "/tmp/fortune.fifo"; + char line[80]; + int fifo_server, fifo_client; + char fifoname[80]; + int nread; + char buffer[PIPE_BUF]; + /* + * Input section: decode parameters passed in the calling + * Use getopt function + */ + int i; + opterr = 0; /* don't want writing to stderr */ + while ( (i = getopt(argc, argv, "hf:")) != -1) { + switch (i) { + /* + * Handling options + */ + case 'h': + printf("Wrong -h option use\n"); + usage(); + return(0); + break; + case 'f': + fortunefilename = optarg; + break; + case '?': /* unrecognized options */ + printf("Unrecognized options -%c\n",optopt); + usage(); + default: /* should not reached */ + usage(); + } + } + /* *********************************************************** + * + * Options processing completed + * + * Main code beginning + * + * ***********************************************************/ + snprintf(fifoname, 80, "/tmp/fortune.%d", getpid()); + if (mkfifo(fifoname, 0622)) { + if (errno!=EEXIST) { + perror("Cannot create well known fifo"); + exit(-1); + } + } + fifo_server = open(fortunefilename, O_WRONLY); + if (fifo_server < 0) { + perror("Cannot open well known fifo"); + exit(-1); + } + debug("%s\n", fifoname); + nread = write(fifo_server, fifoname, strlen(fifoname)+1); + close(fifo_server); + fifo_client = open(fifoname, O_RDONLY); + if (fifo_client < 0) { + perror("Cannot open well known fifo"); + exit(-1); + } + nread = read(fifo_client, buffer, sizeof(buffer)); + printf("%s", buffer); + close(fifo_client); + close(fifo_server); + unlink(fifoname); +} +/* + * routine to print usage info and exit + */ +void usage(void) { + printf("Elementary fortune server\n"); + printf("Usage:\n"); + printf(" fortune [-h] [-f] \n"); + printf(" -h print this help\n"); + printf(" -f filename set file for fortunes\n"); + exit(1); +} diff --git a/sources/FortuneParse.c b/sources/FortuneParse.c new file mode 100644 index 0000000..962ffc5 --- /dev/null +++ b/sources/FortuneParse.c @@ -0,0 +1,83 @@ +/* FortuneParse.c + * + * Copyright (C) 2002 Simone Piccardi + * + * 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 + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +/**************************************************************** + * + * Routine FortuneParse + * parse fortunes from a fortune file + * + * Author: Simone Piccardi + * Aug. 2002 + * + * Usage: int FortuneParse(char *file, char ** fortune, int n); + * Read n fortunes from fortune file file, and put it into the + * string array fortune + * + * $Id: FortuneParse.c,v 1.1 2002/08/18 10:34:10 piccardi Exp $ + * + ****************************************************************/ +/* + * Include needed headers + */ +#include /* predefined types */ +#include /* */ +#include /* include unix standard library */ +#include /* include standard I/O library */ +#include /* standard library */ +#include /* ANSI C standard string */ +#include /* error definitions */ +#include /* */ + +/* Subroutines declaration */ +extern void usage(void); + +int FortuneParse(char *file, char **fortune, int n) +{ +/* Variables definition */ + FILE *fortunefile; + char line[80]; + int i; + /* + * fortune file scanning, read string in memory + */ + fortunefile = fopen(file,"r"); + if (fortunefile == NULL) { /* on open error exit */ + perror("Opening fortune file"); + exit(-1); + } + i = 0; + do { + if (!fgets(line, 80, fortunefile)) { + if (feof(fortunefile)) break; + perror("Read error"); + exit(-1); + } + if (line[0]=='\n') { + if (fortune[i]!=NULL) i++; + continue; + } + if (fortune[i]==NULL) { + fortune[i] = (char *) malloc(strlen(line)+1); + strncpy(fortune[i], line, strlen(line)+1); + } else { + fortune[i] = (char *) realloc(fortune[i], strlen(line)+1); + strncat(fortune[i], line, strlen(line)+1); + } + } while (i /* predefined types */ +#include /* */ +#include /* include unix standard library */ +#include /* include standard I/O library */ +#include /* standard library */ +#include /* ANSI C standard string */ +#include /* errorstring */ +#include /* */ + +#include "macros.h" + +/* Subroutines declaration */ +void usage(void); +int FortuneParse(char *file, char **fortune, int n); + +int main(int argc, char *argv[]) +{ +/* Variables definition */ + int n = 0; + FILE *fortunefile; + char *fortunefilename = "/usr/share/misc/fortune/fortune.it"; + char *fifoname = "/tmp/fortune.fifo"; + char **fortune; + char line[80]; + int fifo_server, fifo_client; + int nread; + /* + * Input section: decode parameters passed in the calling + * Use getopt function + */ + int i; + opterr = 0; /* don't want writing to stderr */ + while ( (i = getopt(argc, argv, "hn:f:")) != -1) { + switch (i) { + /* + * Handling options + */ + case 'h': + printf("Wrong -h option use\n"); + usage(); + return(0); + break; + case 'f': + fortunefilename = optarg; + break; + case 'n': + n = strtol(optarg, NULL, 10); + fortune = (char **) calloc(sizeof(*fortune), n); + break; + case '?': /* unrecognized options */ + printf("Unrecognized options -%c\n",optopt); + usage(); + default: /* should not reached */ + usage(); + } + } + /* *********************************************************** + * + * Options processing completed + * + * Main code beginning + * + * ***********************************************************/ + if (n==0) { /* if no pool depth exit */ + usage(); /* print usage info */ + } + i = FortuneParse(fortunefilename, fortune, n); + for (n=0; n