Exercise mycp a basic GNU cp clone
This commit is contained in:
Fabio Scotto di Santolo
56
exercises/mycp/Makefile
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56
exercises/mycp/Makefile
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# Nome del file eseguibile
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TARGET = mycp
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# Compilatore
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CC = gcc
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# Opzioni di compilazione (C11 + warning utili + debug info)
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CFLAGS = -Wall -Wextra -fsanitize=address -lasan -std=c11 -g
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# File sorgente
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SRC = main.c
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LOGFILE = test_results.log
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HTMLREPORT = test_report.html
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VALGRIND_OUTPUT = valgrind_output.txt
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.PHONY: all clean clean-tests test
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all: $(TARGET)
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$(TARGET): $(SRC)
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$(CC) $(CFLAGS) -o $@ $^
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test: clean-tests $(TARGET)
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./test_mycp.sh
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clean-tests:
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@echo "[CLEANUP] Removing test files and logs..."
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rm -f \
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test_input.txt \
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test_output.txt \
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bin_input \
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bin_output \
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readonly.txt \
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existing.txt \
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bigfile \
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bigfile_copy \
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*.copy \
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$(LOGFILE) \
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$(HTMLREPORT) \
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$(VALGRIND_OUTPUT)
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clean: clean-tests
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rm -f $(TARGET)
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report: test
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./generate_report.sh
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valgrind: $(TARGET)
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valgrind --leak-check=full --show-leak-kinds=all --track-origins=yes ./mycp test_input.txt test_output.txt
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valgrind-test: $(TARGET)
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./valgrind_test.sh
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40
exercises/mycp/generate_report.sh
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40
exercises/mycp/generate_report.sh
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#!/bin/sh
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LOG=test_results.log
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OUT=test_report.html
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echo "[INFO] Generating HTML report..."
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cat <<EOF > "$OUT"
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>mycp Test Report</title>
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<style>
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body { font-family: monospace; background: #111; color: #eee; padding: 20px; }
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.pass { color: #8f8; }
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.fail { color: #f88; }
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h1 { color: #0af; }
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</style>
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</head>
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<body>
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<h1>mycp Test Report</h1>
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<pre>
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EOF
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sed \
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-e 's/✔/<span class="pass">✔<\/span>/g' \
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-e 's/✘/<span class="fail">✘<\/span>/g' \
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-e 's/✅/<span class="pass">✅<\/span>/g' \
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-e 's/❌/<span class="fail">❌<\/span>/g' \
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"$LOG" >> "$OUT"
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cat <<EOF >> "$OUT"
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</pre>
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</body>
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</html>
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EOF
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echo "✅ HTML report saved to $OUT"
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69
exercises/mycp/main.c
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69
exercises/mycp/main.c
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#define BUFF_LEN 4096
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int main(int argc, char *argv[]) {
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// Check number of arguments
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if (argc < 3) {
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fprintf(stderr, "Usage: %s SOURCE DEST\n", argv[0]);
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return EXIT_FAILURE;
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}
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// Get arguments
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const char *src = argv[1];
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const char *dst = argv[2];
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// Open source file in read only mode
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int srcfd = open(src, O_RDONLY);
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if (srcfd == -1) {
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perror("Failed open source file");
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return EXIT_FAILURE;
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}
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// Open destination file in write mode, if exists trunc file otherwise create a new file
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int dstfd = open(dst, O_WRONLY | O_CREAT | O_TRUNC, 0644);
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if (dstfd == -1) {
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perror("Failed open destination file");
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if (close(srcfd) == -1) {
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perror("Failed close source file");
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}
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return EXIT_FAILURE;
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}
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int exit_code = EXIT_SUCCESS;
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char buff[BUFF_LEN]; // reading data buffer
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ssize_t read_bytes;
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while ((read_bytes = read(srcfd, buff, BUFF_LEN)) != 0) {
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if (read_bytes == -1) {
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// There is an error for reading source file
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if (errno == EINTR) continue;
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perror("Failed to read source file");
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exit_code = EXIT_FAILURE;
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break;
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}
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// Write buffer at destination file
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if (write(dstfd, buff, read_bytes) == -1) {
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perror("Error to write to destination file");
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exit_code = EXIT_FAILURE;
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break;
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}
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}
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// Try to close files
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if (close(srcfd) == -1) {
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perror("Failed to close source file");
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exit_code = EXIT_FAILURE;
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}
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if (close(dstfd) == -1) {
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perror("Failed to close destination file");
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exit_code = EXIT_FAILURE;
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}
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return exit_code;
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}
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89
exercises/mycp/test_mycp.sh
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89
exercises/mycp/test_mycp.sh
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#!/bin/sh
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EXEC=./mycp
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LOGFILE=test_results.log
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PASS=0
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FAIL=0
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echo "[INFO] Running tests for $EXEC" > "$LOGFILE"
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echo "[INFO] Date: $(date)" >> "$LOGFILE"
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echo "===================================" >> "$LOGFILE"
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log() {
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echo "$1" | tee -a "$LOGFILE"
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}
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check() {
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DESC="$1"
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CMD="$2"
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EXPECT="$3"
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log "[TEST] $DESC"
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eval "$CMD" > /dev/null 2>&1
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RET=$?
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if [ "$RET" -eq "$EXPECT" ]; then
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log " ✔ SUCCESS (exit code $RET)"
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PASS=$((PASS + 1))
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else
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log " ✘ FAIL (exit code $RET, expected $EXPECT)"
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FAIL=$((FAIL + 1))
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fi
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}
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compare_files() {
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FILE1="$1"
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FILE2="$2"
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if cmp -s "$FILE1" "$FILE2"; then
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log " ✔ Files are identical"
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else
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log " ✘ Files differ!"
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FAIL=$((FAIL + 1))
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fi
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}
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# Test 1
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echo "Hello World" > test_input.txt
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check "Copy text file" "$EXEC test_input.txt test_output.txt" 0
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compare_files test_input.txt test_output.txt
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# Test 2
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cp /bin/ls bin_input
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check "Copy binary file" "$EXEC bin_input bin_output" 0
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compare_files bin_input bin_output
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# Test 3
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check "Source file does not exist" "$EXEC nofile.txt shouldnotexist" 1
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# Test 4
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check "Missing arguments" "$EXEC" 1
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# Test 5
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echo "readonly" > readonly.txt
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chmod 444 readonly.txt
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check "Write to read-only file" "$EXEC test_input.txt readonly.txt" 1
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chmod 644 readonly.txt
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# Test 6
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echo "old content" > existing.txt
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check "Overwrite existing file" "$EXEC test_input.txt existing.txt" 0
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compare_files test_input.txt existing.txt
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# Test 7
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dd if=/dev/urandom of=bigfile bs=1K count=128 status=none
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check "Copy large file (128KB)" "$EXEC bigfile bigfile_copy" 0
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compare_files bigfile bigfile_copy
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# Summary
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log ""
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log "Tests passed: $PASS"
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log "Tests failed: $FAIL"
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if [ "$FAIL" -eq 0 ]; then
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log "✅ All tests passed"
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exit 0
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else
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log "❌ Some tests failed"
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exit 1
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fi
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19
exercises/mycp/valgrind_test.sh
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19
exercises/mycp/valgrind_test.sh
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@@ -0,0 +1,19 @@
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#!/bin/sh
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EXEC=./mycp
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LOGFILE=valgrind_output.txt
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INPUT=test_input.txt
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OUTPUT=test_output.txt
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echo "Testing with Valgrind..." > "$LOGFILE"
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echo "Input: $INPUT → Output: $OUTPUT" >> "$LOGFILE"
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echo "----------------------------------------" >> "$LOGFILE"
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# Prepara input file
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echo "Valgrind test content" > "$INPUT"
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valgrind --leak-check=full --show-leak-kinds=all --track-origins=yes \
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"$EXEC" "$INPUT" "$OUTPUT" 2>> "$LOGFILE"
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echo "✅ Valgrind test completed. Output in $LOGFILE."
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