📄 cgiman.c
字号:
//ylsdd 2002.10.30 #include <unistd.h>#include <stdio.h>#include <string.h>#include <stdlib.h>char *getsenv(char *s){ char *t = getenv(s); if (t) return t; return "";}int__to16(char c){ if (c >= 'a' && c <= 'f') return c - 'a' + 10; if (c >= 'A' && c <= 'F') return c - 'A' + 10; if (c >= '0' && c <= '9') return c - '0'; return 0;}void__unhcode(char *s){ int m, n; for (m = 0, n = 0; s[m]; m++, n++) { if (s[m] == '+') { s[n] = ' '; continue; } if (s[m] == '%') { s[n] = __to16(s[m + 1]) * 16 + __to16(s[m + 2]); m += 2; continue; } s[n] = s[m]; } s[n] = 0;}voidstrsncpy(char *s1, char *s2, int n){ int l = strlen(s2); if (n < 0) return; if (n > l + 1) n = l + 1; strncpy(s1, s2, n - 1); s1[n - 1] = 0;}char *nohtml(char *s){ static char buf[5000]; int i = 0; while (*s && i < sizeof (buf) - 10) { if (*s == '<') { strcpy(buf + i, "<"); i += 4; } else if (*s == '>') { strcpy(buf + i, ">"); i += 4; } else { buf[i] = *s; i++; } s++; } buf[i] = 0; return buf;}voidprintsection(){ printf("各章节介绍<br>"); printf("<LI><A HREF='cgiman?1+intro'>USER COMMANDS</A>" "<LI><A HREF='cgiman?2+intro'>SYSTEM CALLS</A>" "<LI><A HREF='cgiman?3+intro'>C LIBRARY FUNCTIONS</A>" "<LI><A HREF='cgiman?4+intro'>DEVICES AND NETWORK INTERFACES</A>" "<LI><A HREF='cgiman?5+intro'>FILE FORMATS</A>" "<LI><A HREF='cgiman?6+intro'>GAMES AND DEMOS</A>" "<LI><A HREF='cgiman?7+intro'>ENVIRONMENTS, TABLES, AND TROFF MACROS</A>" "<LI><A HREF='cgiman?8+intro'>MAINTENANCE COMMANDS</A>" //"<LI><A HREF='cgiman?n+'>...</A>" //"<LI><A HREF='cgiman?1+X'>X WINDOW SYSTEM</A>" );}voidprintform(){ int i; printf ("<hr><form action=cgiman>要查询的关键词: <INPUT NAME=qry SIZE=24>" " <INPUT TYPE=submit VALUE='查找'>" "<P>选择章节: <SELECT NAME=sec>" "<OPTION VALUE='ANY'> 任意"); for (i = 1; i < 9; i++) printf("<OPTION VALUE='%d'> %d", i, i); printf("<OPTION VALUE='n' > n <OPTION VALUE='x' > x </SELECT></form>");}voidprintheader(){ static int r = 0; if (r) return; printf("Content-type: text/html\n\n<HTML><HEAD>" "<META HTTP-EQUIV='content-type' CONTENT='text/html; charset=GB2312'>" "</HEAD><BODY bgcolor=#f0f4f0><br>天大求实 BBS Linux 在线手册<hr>"); r = 1;}intgetformarg(char *buf, char *sec, char *qry, int len){ char *t2, *t3; qry[0] = 0; sec[0] = 0; t2 = strtok(buf, "&"); while (t2) { t3 = strchr(t2, '='); if (t3 != 0) { t3[0] = 0; t3++; __unhcode(t3); if (!strcmp(t2, "sec")) { strsncpy(sec, t3, len); } if (!strcmp(t2, "qry")) { strsncpy(qry, t3, len); } } t2 = strtok(NULL, "&"); } if (!qry[0]) return -1; while (qry[0] == ' ') memmove(qry, qry + 1, strlen(qry)); if ((t2 = strchr(qry, ' '))) *t2 = 0; return 0;}intgeturlarg(char *buf, char *sec, char *qry, int len){ char *t2; qry[0] = 0; sec[0] = 0; t2 = strtok(buf, "+"); if (!t2) return -1; __unhcode(t2); strsncpy(sec, t2, len); t2 = strtok(NULL, "+"); if (!t2) return -1; __unhcode(t2); strsncpy(qry, t2, len); return 0;}intteststr(char *str){ char rejectstr[] = "\"'\\`~,:;!@#$%^&*|/? <>()[]{}\t\n\r"; if (strpbrk(str, rejectstr)) return -1; return 0;}inttestarg(char *sec, char *qry){ if (teststr(sec) || teststr(qry)) return -1; if (!strcasecmp(sec, "any")) sec[0] = 0; return 0;}intgetmanfile(char *sec, char *qry, char *manfile, int len){ char cmd[1024], *ptr; FILE *p; if (sec[0]) snprintf(cmd, sizeof (cmd), "man -w -c '%s' '%s'", sec, qry); else snprintf(cmd, sizeof (cmd), "man -w -c '%s'", qry); p = popen(cmd, "r"); if (!p) return -1; if (!fgets(manfile, len, p)) { pclose(p); return -1; } pclose(p); ptr = strchr(manfile, '\r'); if (ptr) *ptr = 0; ptr = strchr(manfile, '\n'); if (ptr) *ptr = 0; if (access(manfile, F_OK)) return -1; return 0;}intrunman2html(char *manfile){ char cmd[2048]; if (strstr(manfile, ".gz")) snprintf(cmd, sizeof (cmd), "zcat '%s' | man2html | sed -es/'http:\\/\\/localhost\\/cgi-bin\\/man\\/man2html'/'cgiman'/g", manfile); else snprintf(cmd, sizeof (cmd), "man2html %s | sed -es/'http:\\/\\/localhost\\/cgi-bin\\/man\\/man2html'/'cgiman'/g", manfile); system(cmd); return 0;}intmain(int argn, char **argv){ char buf[1024], sec[100], qry[100], manfile[100]; int retv; strsncpy(buf, getsenv("QUERY_STRING"), sizeof (buf)); if (strchr(buf, '&')) retv = getformarg(buf, sec, qry, 100); else if (strchr(buf, '+')) retv = geturlarg(buf, sec, qry, 100); else retv = -1; if (!retv) retv = testarg(sec, qry); if (!retv) { retv = getmanfile(sec, qry, manfile, sizeof (manfile)); if (retv) { printheader(); printf ("找不到与<font color=red>%s</font>相关的文档<br><br>\n", nohtml(qry)); } } if (retv) { printheader(); printsection(); printform(); return 0; } runman2html(manfile); return 0;}⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -