Rename project from wireframe to packeteer

Decided on the name after weighing alternatives in NAMES.md: packeteer
(packet + -eer, "one who wields packets") fit the project's actual
scope better than the wire/frame pun once it had grown into full
L2-L7 dissection, reassembly, checksums, privilege dropping, and dual
TUI/GUI frontends. No existing packet-capture project uses the name;
the one real-world collision (Packeteer, Inc., a networking company
acquired and folded into Blue Coat/Symantec by 2008) is long defunct.

Mechanical rename throughout: CMake project/target names, the
wireframe:: namespace and include/wireframe/ directory (git mv,
history preserved), every #include path, CLI/GUI help text, and the
project's own working directory. NAMES.md rewritten to record the
decision instead of leaving stale self-referential etymology behind
from the blind rename pass.

Verified after every step: full rebuild (all four targets, no
warnings) and the full test suite (128/128 cases, 366/366 assertions)
both from a fresh reconfigure and again after the directory move.

2 files changed, 0 insertions, 217 deletions

diff --git a/include/wireframe/pcapng/reader.hpp b/include/wireframe/pcapng/reader.hpp
deleted file mode 100644
index d01b431..0000000
--- a/include/wireframe/pcapng/reader.hpp
+++ /dev/null
@@ -1,123 +0,0 @@
-#pragma once
-
-#include <array>
-#include <cstdint>
-#include <cstdio>
-#include <optional>
-#include <span>
-#include <vector>
-
-// Minimal pcapng reader, paired with writer.hpp: reads Enhanced Packet
-// Blocks sequentially, skipping the Section Header Block, Interface
-// Description Block, and any other block type transparently.
-//
-// Assumes little-endian block encoding (checked against the Section
-// Header Block's byte-order magic, not just assumed) since that's what
-// writer.hpp emits and what pcapng writers on this class of hardware
-// (tcpdump, dumpcap) produce. A big-endian file is out of scope - this
-// pairs with our own writer, not general pcapng interop.
-namespace wireframe::pcapng {
-
-struct PacketRecord {
-    std::uint32_t interface_id;
-    std::uint64_t timestamp_us;
-    std::uint32_t original_len;
-    std::vector<unsigned char> data;
-};
-
-class Reader {
-public:
-    explicit Reader(std::FILE* file) : file_(file) {}
-
-    // Returns the next packet, or nullopt once the file is exhausted or
-    // a malformed/unsupported block is hit - treated as end of stream
-    // rather than a hard error, to keep this reader small.
-    std::optional<PacketRecord> next_packet() {
-        for (;;) {
-            std::array<std::uint8_t, 4> field{};
-            if (std::fread(field.data(), 1, 4, file_) != 4) return std::nullopt;
-            std::uint32_t type = get_u32(field);
-
-            if (std::fread(field.data(), 1, 4, file_) != 4) return std::nullopt;
-            std::uint32_t total_len = get_u32(field);
-            if (total_len < 12) return std::nullopt;
-
-            std::size_t body_len = total_len - 12;
-            // total_len is an untrusted 32-bit value straight from the
-            // file; without a cap, a corrupted/hostile file can claim
-            // a multi-gigabyte block and OOM the process on the
-            // allocation below before a single byte is even read to
-            // check whether the file actually contains that much data
-            // (found by fuzzing fuzz_pcapng_reader.cpp - real crash,
-            // not theoretical). Bounded well above any block our own
-            // writer produces (packets capped at a 65535 snaplen; this
-            // reader is explicitly scoped to pair with that writer,
-            // not arbitrary pcapng interop).
-            if (body_len > kMaxBlockBodyLen) return std::nullopt;
-            std::vector<std::uint8_t> body(body_len);
-            if (body_len > 0 && std::fread(body.data(), 1, body_len, file_) != body_len) {
-                return std::nullopt;
-            }
-
-            if (std::fread(field.data(), 1, 4, file_) != 4) return std::nullopt;
-            if (get_u32(field) != total_len) return std::nullopt;  // corrupt trailer
-
-            if (type == kBlockTypeShb) {
-                if (body_len < 4 || get_u32({body.data(), 4}) != kByteOrderMagic) {
-                    return std::nullopt;  // not little-endian, or malformed
-                }
-                continue;
-            }
-            if (type == kBlockTypeIdb) {
-                // LinkType is the first 2 bytes of the IDB body (see
-                // writer.hpp's write_interface_description). Only the
-                // first IDB is captured - correct for a file our own
-                // writer produced, which only ever writes one
-                // interface, matching this reader's documented scope.
-                if (!link_type_ && body_len >= 2) {
-                    link_type_ = static_cast<std::uint16_t>(body[0] | (body[1] << 8));
-                }
-                continue;
-            }
-            if (type != kBlockTypeEpb) continue;  // anything else: skip
-
-            if (body_len < 20) return std::nullopt;
-
-            PacketRecord record;
-            record.interface_id = get_u32({body.data() + 0, 4});
-            std::uint32_t ts_high = get_u32({body.data() + 4, 4});
-            std::uint32_t ts_low = get_u32({body.data() + 8, 4});
-            record.timestamp_us = (static_cast<std::uint64_t>(ts_high) << 32) | ts_low;
-            std::uint32_t caplen = get_u32({body.data() + 12, 4});
-            record.original_len = get_u32({body.data() + 16, 4});
-
-            if (body_len < 20 + caplen) return std::nullopt;
-            record.data.assign(body.begin() + 20, body.begin() + 20 + caplen);
-            return record;
-        }
-    }
-
-    // The interface's link type, learned from the Interface
-    // Description Block once next_packet() has read past it (which
-    // happens before it ever returns the first EPB, so this is
-    // populated by the time the first successful next_packet() call
-    // returns). nullopt if no IDB has been seen yet.
-    std::optional<std::uint16_t> link_type() const { return link_type_; }
-
-private:
-    static std::uint32_t get_u32(std::span<const std::uint8_t> b) {
-        return static_cast<std::uint32_t>(b[0]) | (static_cast<std::uint32_t>(b[1]) << 8) |
-               (static_cast<std::uint32_t>(b[2]) << 16) | (static_cast<std::uint32_t>(b[3]) << 24);
-    }
-
-    static constexpr std::uint32_t kBlockTypeShb = 0x0A0D0D0A;
-    static constexpr std::uint32_t kBlockTypeIdb = 0x00000001;
-    static constexpr std::uint32_t kBlockTypeEpb = 0x00000006;
-    static constexpr std::uint32_t kByteOrderMagic = 0x1A2B3C4D;
-    static constexpr std::size_t kMaxBlockBodyLen = 1 << 20;  // 1 MiB
-
-    std::FILE* file_;
-    std::optional<std::uint16_t> link_type_;
-};
-
-}  // namespace wireframe::pcapng
diff --git a/include/wireframe/pcapng/writer.hpp b/include/wireframe/pcapng/writer.hpp
deleted file mode 100644
index 18f6022..0000000
--- a/include/wireframe/pcapng/writer.hpp
+++ /dev/null
@@ -1,94 +0,0 @@
-#pragma once
-
-#include <algorithm>
-#include <cstdint>
-#include <cstdio>
-#include <span>
-#include <vector>
-
-// Minimal pcapng writer: one Section Header Block, one Interface
-// Description Block, then an Enhanced Packet Block per captured packet.
-// Per-block Options are skipped entirely - they're optional in the
-// spec, and a block with none simply omits that section, so this stays
-// a valid, Wireshark-readable file without needing to hand-encode TLVs.
-//
-// Multi-byte fields are written little-endian by hand (matching the
-// 0x1A2B3C4D byte-order magic below) rather than via struct-casting,
-// for the same alignment/UB reasons as the src/wireframe/net decoders.
-namespace wireframe::pcapng {
-
-inline constexpr std::uint32_t kBlockTypeShb = 0x0A0D0D0A;
-inline constexpr std::uint32_t kBlockTypeIdb = 0x00000001;
-inline constexpr std::uint32_t kBlockTypeEpb = 0x00000006;
-inline constexpr std::uint32_t kByteOrderMagic = 0x1A2B3C4D;
-inline constexpr std::uint16_t kLinkTypeEthernet = 1;
-
-class Writer {
-public:
-    explicit Writer(std::FILE* file) : file_(file) {}
-
-    void write_section_header() {
-        std::uint8_t body[16];
-        put_u32(body + 0, kByteOrderMagic);
-        put_u16(body + 4, 1);  // major version
-        put_u16(body + 6, 0);  // minor version
-        put_u64(body + 8, 0xFFFFFFFFFFFFFFFFULL);  // section length: unknown
-        write_block(kBlockTypeShb, {body, sizeof(body)});
-    }
-
-    void write_interface_description(std::uint32_t snaplen, std::uint16_t link_type) {
-        std::uint8_t body[8];
-        put_u16(body + 0, link_type);
-        put_u16(body + 2, 0);  // reserved
-        put_u32(body + 4, snaplen);
-        write_block(kBlockTypeIdb, {body, sizeof(body)});
-    }
-
-    void write_packet(std::uint32_t interface_id, std::uint32_t ts_sec, std::uint32_t ts_usec,
-                       std::span<const unsigned char> data, std::uint32_t original_len) {
-        std::uint64_t ts_us = static_cast<std::uint64_t>(ts_sec) * 1'000'000ULL + ts_usec;
-        std::uint32_t ts_high = static_cast<std::uint32_t>(ts_us >> 32);
-        std::uint32_t ts_low = static_cast<std::uint32_t>(ts_us & 0xFFFFFFFFULL);
-
-        std::size_t padded_len = (data.size() + 3) & ~std::size_t(3);
-        std::vector<std::uint8_t> body(20 + padded_len, 0);  // tail is padding, stays zero
-        put_u32(body.data() + 0, interface_id);
-        put_u32(body.data() + 4, ts_high);
-        put_u32(body.data() + 8, ts_low);
-        put_u32(body.data() + 12, static_cast<std::uint32_t>(data.size()));
-        put_u32(body.data() + 16, original_len);
-        std::copy(data.begin(), data.end(), body.begin() + 20);
-
-        write_block(kBlockTypeEpb, body);
-    }
-
-private:
-    static void put_u16(std::uint8_t* p, std::uint16_t v) {
-        p[0] = static_cast<std::uint8_t>(v & 0xFF);
-        p[1] = static_cast<std::uint8_t>((v >> 8) & 0xFF);
-    }
-
-    static void put_u32(std::uint8_t* p, std::uint32_t v) {
-        for (int i = 0; i < 4; ++i) p[i] = static_cast<std::uint8_t>((v >> (8 * i)) & 0xFF);
-    }
-
-    static void put_u64(std::uint8_t* p, std::uint64_t v) {
-        for (int i = 0; i < 8; ++i) p[i] = static_cast<std::uint8_t>((v >> (8 * i)) & 0xFF);
-    }
-
-    void write_block(std::uint32_t type, std::span<const std::uint8_t> body) {
-        std::uint32_t total_len = static_cast<std::uint32_t>(8 + body.size() + 4);
-        std::uint8_t type_buf[4];
-        std::uint8_t len_buf[4];
-        put_u32(type_buf, type);
-        put_u32(len_buf, total_len);
-        std::fwrite(type_buf, 1, 4, file_);
-        std::fwrite(len_buf, 1, 4, file_);
-        std::fwrite(body.data(), 1, body.size(), file_);
-        std::fwrite(len_buf, 1, 4, file_);
-    }
-
-    std::FILE* file_;
-};
-
-}  // namespace wireframe::pcapng