2000th COMMIT: userspace: Implement basic fetch program bananfetch
This patch adds a obligatory fetch program to banan-os! This program (`bananfetch`) fetches some basic information about the operating system and the hardware its running on!
This commit is contained in:
parent
44f0ec601f
commit
91d513a672
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@ -1,4 +1,5 @@
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set(USERSPACE_PROGRAMS
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bananfetch
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cat
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cat-mmap
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chmod
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@ -0,0 +1,9 @@
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set(SOURCES
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main.cpp
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)
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add_executable(bananfetch ${SOURCES})
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banan_link_library(bananfetch ban)
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banan_link_library(bananfetch libc)
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install(TARGETS bananfetch OPTIONAL)
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@ -0,0 +1,281 @@
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#include <BAN/IPv4.h>
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#include <BAN/String.h>
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#include <BAN/Vector.h>
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#include <arpa/inet.h>
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#include <dirent.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <stdio.h>
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#include <string.h>
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#include <stropts.h>
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#include <sys/banan-os.h>
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#include <sys/framebuffer.h>
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#include <sys/socket.h>
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#include <sys/utsname.h>
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#include <unistd.h>
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#define COLOR_ON "\e[33m"
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#define COLOR_OFF "\e[m"
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static constexpr const char* s_banana_art1[] {
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" X. ",
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" :; ",
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" .:; ",
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" ::::.",
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" .::::;.",
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".;. ..::::;;; ",
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";:::;::::::::;;;. ",
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" x;;;;;;;;;;;;. ",
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" ..x+;.. "
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};
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static constexpr size_t s_banana_art1_width = 19;
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static constexpr size_t s_banana_art1_height = 9;
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static constexpr const char* s_banana_art2[] {
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" Z¨ ",
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" )r ",
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" `• ",
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" «/¿7`",
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" `»!}[ì`",
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"”<` ``«•×}ï1= ",
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">**¿<+)//(†×¿vîr´ ",
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" U==íï<<ííîcoc´ ",
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" ´¨kC‰·` "
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};
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static constexpr size_t s_banana_art2_width = 19;
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static constexpr size_t s_banana_art2_height = 9;
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const char* get_cpu_manufacturer()
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{
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uint32_t max_extended;
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asm volatile("cpuid" : "=a"(max_extended) : "a"(0x80000000));
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if (max_extended >= 0x80000004)
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{
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static char string[49];
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for (int i = 0; i < 3; i++)
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{
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uint32_t eax, ebx, ecx, edx;
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asm volatile("cpuid" : "=a"(eax), "=b"(ebx), "=c"(ecx), "=d"(edx) : "a"(0x80000002 + i));
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memcpy(string + i * 16 + 0, &eax, 4);
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memcpy(string + i * 16 + 4, &ebx, 4);
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memcpy(string + i * 16 + 8, &ecx, 4);
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memcpy(string + i * 16 + 12, &edx, 4);
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}
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string[48] = '\0';
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return string;
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}
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else
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{
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uint32_t ebx, ecx, edx;
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asm volatile("cpuid" : "=b"(ebx), "=c"(ecx), "=d"(edx) : "a"(0));
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char string[13];
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memcpy(string + 0, &ebx, 4);
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memcpy(string + 4, &edx, 4);
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memcpy(string + 8, &ecx, 4);
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string[12] = '\0';
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if (strcmp(string, "AuthenticAMD") == 0) return "AMD";
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if (strcmp(string, "CentaurHauls") == 0) return "Centaur";
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if (strcmp(string, "CyrixInstead") == 0) return "Cyrix";
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if (strcmp(string, "GenuineIntel") == 0) return "Intel";
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if (strcmp(string, "GenuineIotel") == 0) return "Intel";
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if (strcmp(string, "TransmetaCPU") == 0) return "Transmeta";
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if (strcmp(string, "GenuineTMx86") == 0) return "Transmeta";
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if (strcmp(string, "Geode by NSC") == 0) return "National Semiconductor";
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if (strcmp(string, "NexGenDriven") == 0) return "NexGen";
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if (strcmp(string, "RiseRiseRise") == 0) return "Rise";
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if (strcmp(string, "SiS SiS SiS ") == 0) return "Sis";
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if (strcmp(string, "UMC UMC UMC ") == 0) return "UMC";
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if (strcmp(string, "Vortex86 SoC") == 0) return "Vortex86";
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if (strcmp(string, " Shanghai ") == 0) return "Zhaoxin";
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if (strcmp(string, "HygonGenuine") == 0) return "Hygon";
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if (strcmp(string, "Genuine RDC") == 0) return "RDC Semiconductor";
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if (strcmp(string, "E2K MACHINE ") == 0) return "MCST Elbrus";
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if (strcmp(string, "VIA VIA VIA ") == 0) return "VIA";
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if (strcmp(string, "AMD ISBETTER") == 0) return "AMD";
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if (strcmp(string, "GenuineAO486") == 0) return "ao486";
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if (strcmp(string, "MiSTer AO486") == 0) return "ao486";
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if (strcmp(string, "MicrosoftXTA") == 0) return "Microsoft x86-to-ARM";
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if (strcmp(string, "VirtualApple") == 0) return "Apple Rosetta 2";
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return "<unknown>";
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}
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}
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BAN::ErrorOr<BAN::Vector<BAN::String>> get_info_lines()
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{
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BAN::Vector<BAN::String> info_lines;
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struct utsname utsname;
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if (uname(&utsname) == -1)
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{
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perror("uname");
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return BAN::Error::from_errno(errno);
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}
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char hostname[HOST_NAME_MAX];
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if (gethostname(hostname, sizeof(hostname)) == -1)
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{
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perror("gethostname");
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return BAN::Error::from_errno(errno);
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}
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const char* login = getlogin();
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if (login == nullptr)
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{
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perror("getlogin");
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return BAN::Error::from_errno(errno);
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}
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timespec uptime;
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if (clock_gettime(CLOCK_MONOTONIC, &uptime) == -1)
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{
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perror("clock_gettime");
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return BAN::Error::from_errno(errno);
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}
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TRY(info_lines.push_back(TRY(BAN::String::formatted(COLOR_ON "{}" COLOR_OFF "@" COLOR_ON "{}", login, hostname))));
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{
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const size_t host_length = strlen(login) + strlen(hostname) + 1;
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TRY(info_lines.emplace_back());
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TRY(info_lines.back().reserve(host_length));
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for (size_t i = 0; i < host_length; i++)
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MUST(info_lines.back().push_back('-'));
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}
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TRY(info_lines.push_back(TRY(BAN::String::formatted(COLOR_ON "OS" COLOR_OFF ": {} {}", utsname.sysname, utsname.machine))));
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TRY(info_lines.push_back(TRY(BAN::String::formatted(COLOR_ON "Kernel" COLOR_OFF ": {}", utsname.release))));
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{
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const uint32_t uptime_day = uptime.tv_sec / (60 * 60 * 24);
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uptime.tv_sec %= 60 * 60 * 24;
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const uint32_t uptime_hour = uptime.tv_sec / (60 * 60);
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uptime.tv_sec %= 60 * 60;
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const uint32_t uptime_minute = uptime.tv_sec / 60;
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uptime.tv_sec %= 60;
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TRY(info_lines.emplace_back(COLOR_ON "Uptime" COLOR_OFF ": "_sv));
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if (uptime_day)
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TRY(info_lines.back().append(TRY(BAN::String::formatted("{}d ", uptime_day))));
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if (uptime_hour)
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TRY(info_lines.back().append(TRY(BAN::String::formatted("{}h ", uptime_hour))));
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TRY(info_lines.back().append(TRY(BAN::String::formatted("{}m ", uptime_minute))));
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}
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if (DIR* dirp = opendir("/usr/bin"); dirp != nullptr)
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{
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size_t program_count = 0;
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struct dirent* dirent;
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while ((dirent = readdir(dirp)))
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{
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if (dirent->d_type != DT_REG)
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continue;
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struct stat st;
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if (fstatat(dirfd(dirp), dirent->d_name, &st, 0) == -1)
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continue;
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program_count += !!(st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH));
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}
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closedir(dirp);
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TRY(info_lines.push_back(TRY(BAN::String::formatted(COLOR_ON "Programs" COLOR_OFF ": {}", program_count))));
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}
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TRY(info_lines.push_back(TRY(BAN::String::formatted(COLOR_ON "CPU" COLOR_OFF ": {}", get_cpu_manufacturer()))));
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if (int meminfo_fd = open("/proc/meminfo", O_RDONLY); meminfo_fd != -1)
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{
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full_meminfo_t meminfo;
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if (read(meminfo_fd, &meminfo, sizeof(meminfo)) == sizeof(meminfo))
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{
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const size_t total_bytes = (meminfo.free_pages + meminfo.used_pages) * meminfo.page_size;
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const size_t used_bytes = meminfo.used_pages * meminfo.page_size;
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TRY(info_lines.push_back(TRY(BAN::String::formatted(COLOR_ON "Memory" COLOR_OFF ": {}MiB / {}MiB", used_bytes >> 20, total_bytes >> 20))));
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}
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close(meminfo_fd);
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}
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if (int fb_fd = open("/dev/fb0", O_RDONLY); fb_fd != -1)
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{
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framebuffer_info_t fb_info;
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if (pread(fb_fd, &fb_info, sizeof(fb_info), -1) == sizeof(framebuffer_info_t))
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TRY(info_lines.push_back(TRY(BAN::String::formatted(COLOR_ON "Resolution" COLOR_OFF ": {}x{}", fb_info.width, fb_info.height))));
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close(fb_fd);
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}
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if (int socket = ::socket(AF_INET, SOCK_DGRAM, 0); socket != -1)
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{
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sockaddr_in sockaddr;
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sockaddr.sin_family = AF_INET;
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sockaddr.sin_port = 0;
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sockaddr.sin_addr.s_addr = INADDR_ANY;
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if (bind(socket, reinterpret_cast<struct sockaddr*>(&sockaddr), sizeof(sockaddr)) == 0)
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{
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ifreq ifreq;
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if (ioctl(socket, SIOCGIFADDR, &ifreq) == 0)
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{
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auto& ifru_addr = *reinterpret_cast<sockaddr_in*>(&ifreq.ifr_ifru.ifru_addr);
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if (ifru_addr.sin_family == AF_INET)
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TRY(info_lines.push_back(TRY(BAN::String::formatted(COLOR_ON "Local IPv4" COLOR_OFF ": {}", BAN::IPv4Address(ifru_addr.sin_addr.s_addr)))));
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}
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}
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close(socket);
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}
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TRY(info_lines.emplace_back());
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TRY(info_lines.emplace_back());
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for (int color = 40; color <= 47; color++)
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TRY(info_lines.back().append(TRY(BAN::String::formatted("\e[{}m ", color))));
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TRY(info_lines.emplace_back());
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for (int color = 100; color <= 107; color++)
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TRY(info_lines.back().append(TRY(BAN::String::formatted("\e[{}m ", color))));
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return info_lines;
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}
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int main()
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{
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constexpr auto& banana_art = s_banana_art2;
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constexpr size_t banana_width = s_banana_art2_width;
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constexpr size_t banana_height = s_banana_art2_height;
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auto info_lines_or_error = get_info_lines();
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if (info_lines_or_error.is_error())
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{
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fprintf(stderr, "Could not get system information: %s\n", info_lines_or_error.error().get_message());
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return 1;
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}
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auto info_lines = info_lines_or_error.release_value();
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for (size_t i = 0; i < BAN::Math::max(banana_height, info_lines.size()); i++)
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{
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if (i < banana_height)
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{
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printf("\e[1G" COLOR_ON);
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printf("%s", banana_art[i]);
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}
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if (i < info_lines.size())
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{
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printf("\e[%zuG" COLOR_OFF, banana_width + 2);
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printf("%s", info_lines[i].data());
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}
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printf(COLOR_OFF "\n");
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}
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}
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