Altera_Forum
Honored Contributor
Honored ContributorHow to make a filename.cgi file?
hi hippo and everyone:
i want to control led on 1C20 through boa webserver i use a example in forum but HTTP 400 appear when i click the buton in IE why? thank! ****************uclinux_led_cgi.c**********************# include <stdio.h># include <string.h># include <stdlib.h># include <C:\altera\kits\nios2\bin\eclipse\workspace\alt_1c20_kernel\build\include\nios2_system.h> void main(void) { np_pio *pio = na_led_pio; pio->np_piodirection = 3; pio->np_piodata = 0; int content_length=0; char *cgiinput ; unsigned char mydata=0; pio->np_piodata = 0x00; printf("Content-type: text/html\n"); printf("\n"); if ( !(content_length = atoi(getenv("CONTENT_LENGTH"))) ) { printf("No Content-Length was sent with the POST request.\n") ; exit(1) ; } if ( !(cgiinput=(char *)malloc(content_length+1)) ) { printf("Could not allocate memory for cgiinput.\n") ; exit(1) ; } if (!fread(cgiinput, content_length, 1, stdin)) { printf("Could not read CGI input from STDIN.\n") ; exit(1) ; } cgiinput[content_length]='\0' ; if (strstr(cgiinput, "LED1")) mydata |= 1; if (strstr(cgiinput, "LED2")) mydata |= 2; if (strstr(cgiinput, "LED3")) mydata |= 4; if (strstr(cgiinput, "LED4")) mydata |= 8; if (strstr(cgiinput, "LED5")) mydata |= 16; if (strstr(cgiinput, "LED6")) mydata |= 32; if (strstr(cgiinput, "LED7")) mydata |= 64; if (strstr(cgiinput, "LED8")) mydata |= 128; pio->np_piodata = mydata; printf("<html><head><title>CGI\n"); printf("Test</title><body>\n"); printf("<h1>LEDs set</h1>"); printf("\n");printf("</body></html>\n"); exit(0); } ****************Makefile*************************# # configurable options# - set DEBUG = 1 to turn on debugging support# DEBUG = 1 PROJ_NAME = uclinux_led_cgi INSTALL_DIR = PROGS := $(PROJ_NAME).exe CFLAGS += # # You should not need to modify anything beyond this point# TOPDIR = ./ include $(TOPDIR)/Rules.mak ifeq '$(DEBUG)' '1' PROGS += $(PROGS:.exe=.gdb) endif all: $(PROGS) .PHONY: clean clean: -rm -f *.[oad] *.elf *.gdb *.bin *.exe .PHONY: install install: all ifeq "$(INSTALL_DIR)" "" $(error No installation directory specified) endif mkdir -p $(INSTALL_DIR)/bin install -v $(filter %.exe, $(PROGS)) $(INSTALL_DIR)/bin ******************index.html******************* <FORM METHOD="POST" ACTION="http://10.0.0.51/cgi-bin/uclinux_led_cgi.cgi"> 1<INPUT TYPE="checkbox" NAME="LED1" VALUE="led1" CHECKED> 2<INPUT TYPE="checkbox" NAME="LED2" VALUE="led2"> 3<INPUT TYPE="checkbox" NAME="LED3" VALUE="led3"> 4<INPUT TYPE="checkbox" NAME="LED4" VALUE="led4"> 5<INPUT TYPE="checkbox" NAME="LED5" VALUE="led5"> 6<INPUT TYPE="checkbox" NAME="LED6" VALUE="led6"> 7<INPUT TYPE="checkbox" NAME="LED7" VALUE="led7"> 8<INPUT TYPE="checkbox" NAME="LED8" VALUE="led8"> <INPUT TYPE="submit" value="OK"> </FORM> ***************************************** i do it as follow: 1>create make target .. in uclinux_led_cgi application 2>build make target .. in uclinux_led_cgi application 3>build project 4>copy uclinux_led_cgi.exe in uclinux_led_cgi folder 5>paste it in home/httpd/cgi-bin in alt_1c20_filesystem 6>change it into uclinux_led_cgi.cgi.exe 7>paste index.html in home/httpd 8>build project in in alt_1c20_filesystem 9>upload romfs.bin ifconfig eth0 10.0.0.51 i can see the index page in IE but HTTP 400 appear when i click button in index page I try out CGI program with GET method It works!
